Visitors watch the model of Chinese-made aircraft C919 at the 2021 Shanghai Cooperation Organization International Investment and Trade Expo held in Qingdao, east China’s Shandong province, April 28, 2021. (People’s Daily Online/Wang Haibin)

Visitors watch robots perform at the 2021 Shanghai Cooperation Organization International Investment and Trade Expo held in Qingdao, east China’s Shandong province, April 26, 2021. (People’s Daily Online/Wang Zhaomai)

Photo taken on Jan. 31, 2021, shows the multimodal transport center of a demonstration zone for China-Shanghai Cooperation Organization local economic and trade cooperation in Jiaozhou, east China’s Shandong province. (People’s Daily Online/Wang Zhaomai)