A staff member explains as visitors look at an emergency communication support system at the China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)

A staff member explains as visitors look at a robot made by Tesla at the China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)

Visitors look at a Tesla vehicle at the China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)

A staff member explains as visitors look at a smart factory robot in the China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)

People visit the China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)

A visitor looks at electronic products at Germany's Pavilion of China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)

A staff member explains as visitors look at the smart city command center project in the China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)

A staff member explains as visitors look at smart manufacturing projects in the China International Digital Economy Expo 2023 in Shijiazhuang, north China's Hebei Province, Sept. 6, 2023.

The China International Digital Economy Expo 2023 kicked off here on Wednesday, focusing on the development of the industrial internet. (Xinhua/Luo Xuefeng)