A staff member adjusts the equipment at the exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept. 2, 2020. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

A journalist takes photos at the exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept. 2, 2020. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

A staff member installs equipment for the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept. 2, 2020. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

Staff members patrol at the exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept. 2, 2020. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

Photo taken on Sept. 2, 2020 shows the outdoor exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

Photo taken on Sept. 2, 2020 shows the outdoor exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

Photo taken on Sept. 2, 2020 shows the outdoor exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

A staff member rehearses a performance at the exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept. 2, 2020. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)

Photo taken on Sept. 2, 2020 shows the outdoor exhibition area of the China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China. The CIFTIS is to be held from Sept. 4 to 9. (Xinhua/Xing Guangli)