China's largest hi-tech fair opens in Shenzhen (1/5)

Intellifusion displays its chip product at the China Hi-tech Fair 2019 in Shenzhen City, Guangdong Province, Nov. 13, 2019. (Photo: China News Service/Chen Wen)

A member of a delegation from Toronto, Canada puts on an AI police helmet at the China Hi-tech Fair 2019 in Shenzhen City, Guangdong Province, Nov. 13, 2019. (Photo: China News Service/Chen Wen)

The Shenzhen Institute of Advanced Technology of the Chinese Academy of Sciences shows a medical device at the China Hi-tech Fair 2019 in Shenzhen City, Guangdong Province, Nov. 13, 2019. (Photo: China News Service/Chen Wen)

The Institute of Acoustics of the Chinese Academy of Sciences shows a device at the China Hi-tech Fair 2019 in Shenzhen City, Guangdong Province, Nov. 13, 2019. (Photo: China News Service/Chen Wen)

Visitors look at a robot cooking system at the China Hi-tech Fair 2019 in Shenzhen City, Guangdong Province, Nov. 13, 2019. (Photo: China News Service/Chen Wen)