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Continue to ChatChina's closed airspace hasn't changed much in 20 years https://leehamnews.com/2013/08/23/chinas-closed-airspace-hasnt-changed-much-in-20-years/
China's closed airspace hasn't changed much in 20 years https://leehamnews.com/2013/08/23/chinas-closed-airspace-hasnt-changed-much-in-20-years/