Staff members of China Railway No.10 Bureau Group work at Huangtai Station of Qingdao-Jinan railway in Jinan, east China's Shandong Province, on Monday. (Photo: Xinhua)

The Union Flag flies at half-mast at Buckingham Palace in central London ahead of the funeral for Britain's Prince Philip, Duke of Edinburgh on Saturday. (Photo: AFP)

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen on the launch pad at Launch Complex 39A during a brief static fire test ahead of NASA's SpaceX Crew-2 mission on Saturday at NASA's Kennedy Space Center in Florida. (Photo: AP)

Photo taken on Tuesday shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

China's Wang Shuang (L) controls the ball during the qualifying play-off second leg women's football match for the Tokyo 2020 Olympic Games between China and South Korea at Suzhou Olympic Sports Centre Stadium in Suzhou, Jiangsu province on Tuesday. (Photo: AFP)

Photo taken on Wednesday shows the Giza Pyramids at sunset seen from Cairo, Egypt. (Photo: Xinhua)

Police officers perform the Chinese-style goose-stepping at the Hong Kong Police College, south China's Hong Kong on Thursday. (Photo: Xinhua)

A member of citizens' groups holds up a banner during a rally to denounce the Japanese government's decision on Fukushima water, in front of a building which houses Japanese Embassy in Seoul, South Korea on Friday. (Photo: AP)

Petronas Yamaha SRT's Italian rider Valentino Rossi rides during the third MotoGP free practice session of the Portuguese Grand Prix at the Algarve International Circuit in Portimao on Saturday. (Photo: AFP)

People wearing protective masks to help curb the spread of the coronavirus walk a street on Thursday in Tokyo. (Photo: AP)