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Beijing’s first air class-action lawsuit related to pollution began an open hearing session at the city’s No 4 People’s Court on Tuesday.

Because of its advantages, including online trading and contactless delivery, cross-border e-commerce has played a positive role in helping foreign trade firms cushion COVID-19 shocks as a new form of trade, said GAC spokesperson Li Kuiwen at a news conference.

Beijing Meteorological Service issued on Monday a new yellow alert — the second-lowest level in a four-tier warning system — for rainfall and the lowest alert for flooding.

Beijing tops the overall green development rankings among 31 provinces and regions on the Chinese mainland, followed by Fujian, Zhejiang, Shanghai and Chongqing, according to results released by the National Bureau of Statistics. The Ningxia Hui, Tibet and Xinjiang Uygur autonomous regions round out the bottom three.

Beijing and Hong Kong officials have not ruled out a retroactive effect of the proposed national security law for Hong Kong, but Ip is hesitant about that because that is not a usual practice in the criminal law system.