Photo taken on Oct. 31, 2016 shows workers preparing for the 11th China International Aviation and Aerospace Exhibition (Nov. 1 to 6) in Zhuhai, south China's Guangdong Province, Oct. 31, 2016. (Xinhua/Liang Xu)
Photo taken on Oct. 31, 2016 shows workers preparing for the 11th China International Aviation and Aerospace Exhibition (Nov. 1 to 6) in Zhuhai, south China's Guangdong Province, Oct. 31, 2016. (Xinhua/Liang Xu)