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Beijing police are investigating the incident. Sun's motive for the attack is not clear.

Beijing added 2,790 new energy buses as the first such major batch order in China was delivered Monday.

Because the world is so interconnected, the supply chains involve so many countries that it would affect the global economy, the IMF has said.

Beijing Daxing International Airport, set to start test runs at the end of September 2019, will combine the use of solar energy, earth energy with traditional energy sources, according to the Beijing Municipal Commission of Development and Reform.

Beijing's top lawmaking body considered new regulations on Thursday that were designed to strengthen the management of shared bicycles.