A polar bear is seen reflected in a pool at its enclosure in the Moscow zoo on February 27, 2020. - International Polar Bear Day is an annual global event celebrated on February 27 that draws attention to the challenges polar bears face in a warming Arctic. (Photo by Yuri KADOBNOV / AFP)

A polar bear is seen reflected in a pool at its enclosure in the Moscow zoo on February 27, 2020. - International Polar Bear Day is an annual global event celebrated on February 27 that draws attention to the challenges polar bears face in a warming Arctic. (Photo by Yuri KADOBNOV / AFP)

A polar bear climbs out of its den in the Moscow zoo on February 27, 2020. - International Polar Bear Day is an annual global event celebrated on February 27 that draws attention to the challenges polar bears face in a warming Arctic. (Photo by Yuri KADOBNOV / AFP)

Visitors look at an otter swimming in its enclosure at the Moscow zoo on February 27, 2020. (Photo by Yuri KADOBNOV / AFP)

An orangutan looks out of its enclosure at the Moscow zoo on February 27, 2020. (Photo by Yuri KADOBNOV / AFP)

An orangutan sleeps in its enclosure at the Moscow zoo on February 27, 2020. (Photo by Yuri KADOBNOV / AFP)

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Airport authorities prepare for coronavirus (Covid-19) check-up to the passengers, who arrive Moscow from Beijing and Hong Kong, for them to go through physical examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Passengers are seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Passengers are seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Passengers are seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: An airport official is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Airport authorities prepare for coronavirus (Covid-19) check-up to the passengers, who arrive Moscow from Beijing and Hong Kong, for them to go through physical examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Airport authorities prepare for coronavirus (Covid-19) check-up to the passengers, who arrive Moscow from Beijing and Hong Kong, for them to go through physical examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Passengers are seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Passengers are seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: Airport authorities prepare for coronavirus (Covid-19) check-up to the passengers, who arrive Moscow from Beijing and Hong Kong, for them to go through physical examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

MOSCOW, RUSSIA - FEBRUARY 26: A passenger is seen after coronavirus (Covid-19) examinations at Sheremetyevo International Airport in Moscow, Russia on February 26, 2020. Sefa Karacan / Anadolu Agency/ABACAPRESS.COM

A man plays the saxophone in a metro train in Moscow on February 25, 2020. (Photo by Yuri KADOBNOV / AFP)

A man plays the saxophone in a metro train in Moscow on February 25, 2020. (Photo by Yuri KADOBNOV / AFP)

A woman wearing a protective facemask walks in front of Moscow's Leningradsky railway station on February 25, 2020. (Photo by Alexander NEMENOV / AFP)

A woman wearing a protective facemask walks in front of Moscow's Leningradsky railway station on February 25, 2020. (Photo by Alexander NEMENOV / AFP)

A man yawns walking in central Moscow on February 25, 2020. (Photo by Alexander NEMENOV / AFP)

People walk on Komsomolskaya square in Moscow on February 25, 2020. (Photo by Alexander NEMENOV / AFP)

People walk on Komsomolskaya square in Moscow on February 25, 2020. (Photo by Alexander NEMENOV / AFP)

A plane flies near the building of the Moscow State University in Moscow on February 25, 2020. (Photo by Alexander NEMENOV / AFP)

Москва. Памятник А. С. Пушкину на Пушкинской площади.

Москва. Священник на Тверской улице.

Москва. Священник на Тверской улице.

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- Riders compete during a street harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- A participant warms up the horse before the start of a harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- Riders compete during a street harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- A participant holds her horse before the start of a harness race, in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- A man sits in the harness before the start of a harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- Riders compete during a street harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- A rider competes during a street harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- Riders compete during a street harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

(200223) -- MOSCOW, Feb. 23, 2020 (Xinhua) -- Riders compete during a street harness race in Moscow, Russia, on Feb. 22, 2020. A street harness race was held here on Saturday, which was one lap sprint on the improvised street track. (Photo by Maxim Chernavsky/Xinhua)

In this photo taken on Saturday, Feb. 22, 2020, two surveillance camera are seen in a street in Moscow, Russia. Moscow's city officials announced a slew of policies aimed at tracking down the few Chinese nationals remaining in the city, including raids on hotels and the use of facial recognition technology to target people evading quarantine. (AP Photo/Alexander Zemlianichenko)

In this photo taken on Saturday, Feb. 22, 2020, passengers enter and exit cars in a Moscow's Metro station in Moscow, Russia. Metro workers were instructed to stop passengers from China and ask them to fill out a questionnaire about the purpose of their visit to Russia, address of residence, health condition and whether they underwent quarantine upon arrival. (AP Photo/Alexander Zemlianichenko)

In this photo taken on Saturday, Feb. 22, 2020, a surveillance camera, top left, is seen as people walk down in a Moscow's Metro (subway) station in Moscow, Russia. Metro workers were instructed to stop passengers from China and ask them to fill out a questionnaire about the purpose of their visit to Russia, address of residence, health condition and whether they underwent quarantine upon arrival. (AP Photo/Alexander Zemlianichenko)

In this photo taken on Saturday, Feb. 22, 2020, people go down on the escalator in a Moscow's Metro (subway) station in Moscow, Russia. Metro workers were instructed to stop passengers from China and ask them to fill out a questionnaire about the purpose of their visit to Russia, address of residence, health condition and whether they underwent quarantine upon arrival. (AP Photo/Alexander Zemlianichenko)

The Russian Foreign Ministry building is reflected in a shop window in Moscow on February 22, 2020. - Russian Foreign Ministry spokeswoman Maria Zakharova said that diplomats in Italy and the Russian Foreign Ministry were trying to "clarify this situation" on Italian police early-morning searches on the hotel rooms of the Russian biathlon team, targeting biathlete Alexander Loginov, possibly looking into a repeat breach of anti-doping rules. (Photo by Alexander NEMENOV / AFP)

People walk and cycle past the Russian Foreign Ministry building in Moscow on February 22, 2020. - Russian Foreign Ministry spokeswoman Maria Zakharova said that diplomats in Italy and the Russian Foreign Ministry were trying to "clarify this situation" on Italian police early-morning searches on the hotel rooms of the Russian biathlon team, targeting biathlete Alexander Loginov, possibly looking into a repeat breach of anti-doping rules. (Photo by Alexander NEMENOV / AFP)

A woman walks near the Russian Foreign Ministry building in Moscow on February 22, 2020. - Russian Foreign Ministry spokeswoman Maria Zakharova said that diplomats in Italy and the Russian Foreign Ministry were trying to "clarify this situation" on Italian police early-morning searches on the hotel rooms of the Russian biathlon team, targeting biathlete Alexander Loginov, possibly looking into a repeat breach of anti-doping rules. (Photo by Alexander NEMENOV / AFP)

This handout photo from Russian Interior Ministry taken on February 22, 2020, and released on February 25, 2020, shows Russian traffic policemen standing next to a vehicle in Moscow that bears a striking resemblance to the "Batmobile" featured in a recent Batman film. - Russian police said the car, styled after the famous getaway belonging to the superhero Batman, was in the possession of a 32-year-old Muscovite and had been confiscated by police last week. (Photo by Handout / Russian Interior Ministry / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / SOURCE / RUSSIAN INTERIOR MINISTRY" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS

In this photo taken on Friday, Feb. 21, 2020, Medical workers walk after checking passengers where a passenger was identified with suspected coronavirus after arriving from Kyiv at Kievsky (Kyiv's) rail station in Moscow, Russia. Russia suspended all trains to China and North Korea, shut down its land border with China and Mongolia and extended a school vacation for Chinese students until March 1. Russian authorities are going to great lengths to prevent the new coronavirus from spreading in the capital and elsewhere. (AP Photo/Alexander Zemlianichenko)

People walk at an observation point at Vorobyovy Hills in Moscow on February 20, 2020. (Photo by Alexander NEMENOV / AFP)

A man enjoys views from an observation point at Vorobyovy Hills in Moscow on February 20, 2020. (Photo by Alexander NEMENOV / AFP)

A woman reads a newspaper sitting on a bench at the Zaryadye park on a sunny day in Moscow on February 20, 2020. (Photo by Dimitar DILKOFF / AFP)

A woman walks along a street on a sunny day in Moscow on February 20, 2020. (Photo by Dimitar DILKOFF / AFP)

A young man walks as the other is reflected on a glass wall at the Zaryadye park in downtown Moscow on February 20, 2020. (Photo by Dimitar DILKOFF / AFP)

Москва. Торговля в подземном переходе.

Москва. Логотип метро.

Москва. Рабочие укладывают плитку в районе Красной площади.

Москва. Рабочие укладывают плитку в районе Красной площади.

Москва. Отражение в витрине магазина.

Москва. Звезда на кремлевской башне.

Москва. Вид на Историчесий музей.

Москва. Дорожный знак стоянка запрещена, работает эвакуатор.

Москва. Дети катаются на карусели на Красной площади.

Москва. Девушка на карусели на Красной площади.

Москва. Дети катаются на карусели на Красной площади.

Москва. Мужчина с мальчиком на самокатах.

Москва. Посетители и туристы на Красной площади.

Москва. Сотрудник сервиса доставки еды на Красной площади.

Москва. Сотрудник сервиса доставки еды на Красной площади.

Москва. Сотрудник сервиса доставки еды на Красной площади.

Москва. Очередь на Красной площади в Мавзолей Ленина.

Москва. Памятник маршалу Георгию Жукову на Манежной площади.

Москва. Памятник Патриарху Гермогену в Александровском саду.

Москва. В Александровском саду.

Москва. В Александровском саду.

Москва. Туристы на самокатах на Манежной улице.

Москва. Вид на Кремль с Троицкого моста.

Москва. Вид на Кремль с Троицкого моста.

Москва. Вид на Спасскую башню и купола храма Василия Блаженного.

Москва. Вид на Успенский собор в Кремле.

Москва. Вид на Успенскую звонницу и колокольню Ивана Великого в Кремле.

Москва. Вид на Сенатский дворец в Кремле.

Москва. Ремонтные работы на территории Кремля.

Москва. Царь-пушка.

Photo: Wojtek Laski / East News The first monument erected in Moscow, by Ivan Martos - monument to the leaders of the anti-Polish uprising of 1611-1612: Kuzma Minin (standing) and prince Dymitr Pozharsky (sitting) in front of the Saint Basil's Cathedral in Moscow, Red Square, Moscow, February 19, 2020. On November 4, the anniversary of expelling Poles from the Kremlin, the Russians celebrate National Unity Day.

Photo: Wojtek Laski / East News The first monument erected in Moscow, by Ivan Martos - monument to the leaders of the anti-Polish uprising of 1611-1612: Kuzma Minin (standing) and prince Dymitr Pozharsky (sitting) in front of the Saint Basil's Cathedral in Moscow, Red Square, Moscow, February 19, 2020. On November 4, the anniversary of expelling Poles from the Kremlin, the Russians celebrate National Unity Day.

Photo: Wojtek Laski / East News The first monument erected in Moscow, by Ivan Martos - monument to the leaders of the anti-Polish uprising of 1611-1612: Kuzma Minin (standing) and prince Dymitr Pozharsky (sitting) in front of the Saint Basil's Cathedral in Moscow, Red Square, Moscow, February 19, 2020. On November 4, the anniversary of expelling Poles from the Kremlin, the Russians celebrate National Unity Day.

Photo: Wojtek Laski / East News The first monument erected in Moscow, by Ivan Martos - monument to the leaders of the anti-Polish uprising of 1611-1612: Kuzma Minin (standing) and prince Dymitr Pozharsky (sitting) in front of the Saint Basil's Cathedral in Moscow, Red Square, Moscow, February 19, 2020. On November 4, the anniversary of expelling Poles from the Kremlin, the Russians celebrate National Unity Day.

People walk past the monument of Soviet Marshal Georgy Zhukov in Manezhnaya Square near the Kremlin in Moscow, Russia, Wednesday, Feb. 19, 2020. (AP Photo/Alexander Zemlianichenko)

Tourists take pictures during the Kremlin guards is changing with the monument of Soviet Marshal Georgy Zhukov in the background in Manezhnaya Square near the Kremlin in Moscow, Russia, Wednesday, Feb. 19, 2020. (AP Photo/Alexander Zemlianichenko)

Chinese tourists talk to each other as they walk on Red Square in Moscow, Russia, Wednesday, Feb. 19, 2020. (AP Photo/Alexander Zemlianichenko)

A man wearing a protective facemask walks on Red Square in front of St. Basil's Cathedral in downtown Moscow on February 19, 2020. (Photo by Yuri KADOBNOV / AFP)

Police officers walk on Red Square in downtown Moscow on February 19, 2020. - Russia on February 18, 2020 said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Yuri KADOBNOV / AFP)

A man walks on Red Square in downtown Moscow on February 19, 2020. - Russia on February 18, 2020 said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Yuri KADOBNOV / AFP)

People walk on Red Square in downtown Moscow on February 19, 2020. - Russia on February 18, 2020 said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Yuri KADOBNOV / AFP)

A man wearing a protective facemask walks on Red Square in downtown Moscow on February 19, 2020. - Russia on February 18, 2020 said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Yuri KADOBNOV / AFP)

Two women walk on Red Square in downtown Moscow on February 19, 2020. - Russia on February 18, 2020 said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Yuri KADOBNOV / AFP)

Girls play bandy during a local tournament at a temporary open air ice rink in the center of Red Square in downtown Moscow on February 19, 2020. (Photo by Kirill KUDRYAVTSEV / AFP)

A man looks at a mannequin in a shop while walking through an underground passage in central Moscow on February 19, 2020. (Photo by Kirill KUDRYAVTSEV / AFP)

Tourists sit on a bench on Arbat pedestrian street in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Alexander NEMENOV / AFP)

A street vendor offers paintings on Arbat pedestrian street in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Alexander NEMENOV / AFP)

Tourists sit on a bench on Arbat pedestrian street in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Alexander NEMENOV / AFP)

A street vendor offers paintings on Arbat pedestrian street in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Alexander NEMENOV / AFP)

People walk along Arbat pedestrian street in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Alexander NEMENOV / AFP)

A man sits on a bench at a bus stop in front of the Bolshoi Theatre in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Kirill KUDRYAVTSEV / AFP)

A municipal worker walks in front of the Bolshoi Theatre in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Kirill KUDRYAVTSEV / AFP)

A man wearing a facemask walks in front of the Russian Central Bank headquarters in downtown Moscow on February 19, 2020. - Russia said it would ban all Chinese citizens from entering its territory from February 20, in a drastic measure against the spread of the new coronavirus, local news agencies said. (Photo by Kirill KUDRYAVTSEV / AFP)

People visit the State Tretyakov Gallery in Moscow on February 19, 2020. - The Tretyakov Gallery, a must-visit for most visitors to Moscow, specialises in Russian art and contains masterpieces including Kazimir Malevich's "Black Square" and paintings by Wassily Kandinsky and Marc Chagall. (Photo by Dimitar DILKOFF / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

A girl listens to an audio guide while standing by "The Rooks Have Returned" by Russian painter Alexei Savrasov exhibited at the State Tretyakov Gallery in Moscow on February 19, 2020. - The Tretyakov Gallery, a must-visit for most visitors to Moscow, specialises in Russian art and contains masterpieces including Kazimir Malevich's "Black Square" and paintings by Wassily Kandinsky and Marc Chagall. (Photo by Dimitar DILKOFF / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

A woman looks at "Boyarynya Morozova" by Russian painter Vasily Surikov exhibited at the State Tretyakov Gallery in Moscow on February 19, 2020. - The Tretyakov Gallery, a must-visit for most visitors to Moscow, specialises in Russian art and contains masterpieces including Kazimir Malevich's "Black Square" and paintings by Wassily Kandinsky and Marc Chagall. (Photo by Dimitar DILKOFF / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION