A journalist is seen during a media preview of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center in Beijing, capital of China, Aug. 28, 2022. The 2022 CIFTIS will be held at the China National Convention Center and the Shougang Park in Beijing from Aug. 31 to Sept. 5. (Xinhua/Han Xu)

A journalist walks past a sign of the 2022 China International Fair for Trade in Services (CIFTIS) outside the China National Convention Center in Beijing, capital of China, Aug. 28, 2022. The 2022 CIFTIS will be held at the China National Convention Center and the Shougang Park in Beijing from Aug. 31 to Sept. 5. (Xinhua/Cai Yang)

Journalists attend a media preview of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center in Beijing, capital of China, Aug. 28, 2022. The 2022 CIFTIS will be held in Shougang Park and the China National Convention Center in Beijing from Aug. 31 to Sept. 5. (Xinhua/Ren Chao)

Photo taken on Aug. 28, 2022 shows an entrance of the China National Convention Center, one of the venues of the 2022 China International Fair for Trade in Services (CIFTIS), in Beijing, capital of China. The 2022 CIFTIS will be held at the China National Convention Center and the Shougang Park in Beijing from Aug. 31 to Sept. 5. (Xinhua/Cai Yang)

A model of C919 passenger aircraft is seen during a media preview of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center in Beijing, capital of China, Aug. 28, 2022. The 2022 CIFTIS will be held at the China National Convention Center and the Shougang Park in Beijing from Aug. 31 to Sept. 5. (Xinhua/Cai Yang)