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)

Photo taken on Aug, 28, 2022 shows the booth of the United Arab Emirates (UAE) of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center in Beijing, capital of China The 2022 CIFTIS will be held in Shougang Park and the China National Convention Center in Beijing from Aug. 31 to Sept. 5. (Xinhua/Hao Zhao)

Photo taken on Aug. 28, 2022 shows a booth of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center 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)

Photo taken on Aug. 28, 2022 shows a railway-themed booth of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center 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/Han Xu)

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

Photo taken on Aug. 28, 2022 shows a view of the China National Convention Center in Beijing, capital of China. The 2022 China International Fair for Trade in Services (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 journalist takes pictures 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)

Photo taken on Aug. 28, 2022 shows a model of C919 aircraft 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. The 2022 CIFTIS will be held in Shougang Park and the China National Convention Center in Beijing from Aug. 31 to Sept. 5. (Xinhua/Hao Zhao)

Photo taken on Aug. 28, 2022 shows a booth of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center 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/Han Xu)

Journalists are 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 staff member displays GTVerse 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 in Shougang Park and the China National Convention Center in Beijing from Aug. 31 to Sept. 5. (Xinhua/Zhang Chenlin)

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

Photo taken on Aug. 28, 2022 shows the logo of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center 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)

Photo taken on Aug. 28, 2022 shows the Annual Thematic Exhibition Area of the 2022 China International Fair for Trade in Services (CIFTIS) at the China National Convention Center in Beijing, capital of China. 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 the booth of the China National Biotec Group (CNBG) 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. 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 journalist takes pictures 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)

An exhibitor debugs a robot 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 in Shougang Park and the China National Convention Center in Beijing from Aug. 31 to Sept. 5. (Xinhua/Zhang Chenlin)