Visitors look at a robot for automatic nucleic acid sampling at the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
People visit the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
A woman visits the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
Visitors look at a train model at the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
Visitors look at a robot for automatic nucleic acid sampling at the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
A boy watches a documentary at the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
People visit the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
Photo taken on Sept 4, 2021 shows the scene of the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China. [Photo/Xinhua]
A visitor looks at a train model at the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
Visitors walk past a screen at the Achievement Exhibition of China's Trade in Services during the 2021 China International Fair for Trade in Services (CIFTIS) in Beijing, capital of China, Sept 4, 2021. [Photo/Xinhua]
