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Confirmed cases of novel coronavirus infection on the Chinese mainland reached 24,324 by the end of Tuesday, Chinese health authorities said Wednesday. A total of 490 people had died of the disease.

College students operate their underwater robots during the Underwater Robot Challenge of the 3rd World Intelligence Congress (WIC) in Tianjin, China, May 15, 2019. [Photo/IC]

Communities and neighborhood committees in Beijing are preparing to upgrade prevention and quarantine measures after the capital released a new quarantine rule on Friday.

Colin Crooks, the British ambassador to Pyongyang, tweeted on Monday that the British embassy there would remain open, while the German embassy and French Office were closing temporarily.

Compared with the protests that erupted in the past five months and often focused on a specific area and ending before midnight, obviously, the clashes around PolyU lasted much longer and were more extensive, significantly aggravating the destruction caused.