A staff member presents an exhibit during the 2020 Smart China Expo Online in southwest China's Chongqing Municipality, Sept. 15, 2020. The expo serves as a platform to promote global exchanges of smart technologies and international cooperation of the smart industry. (Xinhua/Tang Yi)

A staff member presents an exhibit during the 2020 Smart China Expo Online in southwest China's Chongqing Municipality, Sept. 15, 2020. The expo serves as a platform to promote global exchanges of smart technologies and international cooperation of the smart industry. (Xinhua/Tang Yi)

A staff member presents an exhibit during the 2020 Smart China Expo Online in southwest China's Chongqing Municipality, Sept. 15, 2020. The expo serves as a platform to promote global exchanges of smart technologies and international cooperation of the smart industry. (Xinhua/Tang Yi)

A staff member demonstrates a 5G-supported remote driving system during the 2020 Smart China Expo Online in southwest China's Chongqing Municipality, Sept. 15, 2020. The expo serves as a platform to promote global exchanges of smart technologies and international cooperation of the smart industry. (Xinhua/Tang Yi)

A staff member presents an exhibit during the 2020 Smart China Expo Online in southwest China's Chongqing Municipality, Sept. 15, 2020. The expo serves as a platform to promote global exchanges of smart technologies and international cooperation of the smart industry. (Xinhua/Tang Yi)