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Because its external security environment is complex, China faces serious challenges in safeguarding its national sovereignty, territorial integrity, maritime rights and other interests, it said.

Before sending the advance team to China, the WHO warned "trolls and conspiracy theories "are undermining the response to the new coronavirus.

Beijing's top judicial and prosecution organs pledged to speed up the handling of violent cases to ensure that "justice is never delayed" after the fatal stabbing of a physician at a Beijing hospital in December.

Before this purchase, Qatar Airways acquired China Southern's A shares and H shares twice respectively in November and last month.

Beijing's new mega-airport opens to the public on Wednesday, welcoming its first passengers after five years of construction.