Combo photo shows a visitor experiencing Boeing 787 flight simulator at the first China International Import Expo (CIIE) in Shanghai, east China, Nov. 5, 2018 (top), and a Boeing flight simulator during the second CIIE, Nov. 8, 2019 (bottom). Many enterprises which attended the first CIIE last year returned this year, hoping to expand global market via the expo. (Xinhua/Fang Zhe)