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Before the ban, diesel trucks were making 6,000 to 7,000 journeys a day to Tianjin Port, Liu Bingjiang, head of air pollution control at the Ministry of Environmental Protection, said on Tuesday at the Environmental Protection Industry Innovation and Development Conference.

Beijing has hoped to attract more talented foreigners since it eased permanent-residence requirements in 2016 to meet its ambition to become "an innovation center of science and technology with global clout."

Beijing Daxing International Airport saw off its first flight after a China Southern Airlines' A380 left the airport at 4:22 pm on Wednesday headed to Guangzhou Baiyun International Airport.

Beijing will foster breakthroughs in key and core technologies, and create a sound ecology for Beidou-related industries via cultivating competitive enterprises, according to the plan.

Beijing Capital International Airport Co Ltd has seen significant revenue growth from its non-aviation income, thanks to the booming business of duty-free stores, driven by a constantly growing number of international travelers and their strong spending power.