A maintenance worker controls an android to patrol at a converter station in Hui Autonomous Prefecture of Changji, northwest China's Xinjiang Uygur Autonomous Region, Oct. 12, 2020. A converter station on an ultra-high-voltage direct current transmission line transmitting electricity from Xinjiang to Anhui in east China started maintenance on Monday. During the 13-day maintenance, 5G technologies will be employed to ensure the smooth workflow of the electricity transmission project. (Xinhua/Ding Lei)

Maintenance staff work at a converter station in Hui Autonomous Prefecture of Changji, northwest China's Xinjiang Uygur Autonomous Region, Oct. 12, 2020. A converter station on an ultra-high-voltage direct current transmission line transmitting electricity from Xinjiang to Anhui in east China started maintenance on Monday. During the 13-day maintenance, 5G technologies will be employed to ensure the smooth workflow of the electricity transmission project. (Xinhua/Ding Lei)

Maintenance workers put on VR equipment to monitor on-site maintenance work at a converter station in Hui Autonomous Prefecture of Changji, northwest China's Xinjiang Uygur Autonomous Region, Oct. 12, 2020. A converter station on an ultra-high-voltage direct current transmission line transmitting electricity from Xinjiang to Anhui in east China started maintenance on Monday. During the 13-day maintenance, 5G technologies will be employed to ensure the smooth workflow of the electricity transmission project. (Xinhua/Ding Lei)

Maintenance staff work at a converter station in Hui Autonomous Prefecture of Changji, northwest China's Xinjiang Uygur Autonomous Region, Oct. 12, 2020. A converter station on an ultra-high-voltage direct current transmission line transmitting electricity from Xinjiang to Anhui in east China started maintenance on Monday. During the 13-day maintenance, 5G technologies will be employed to ensure the smooth workflow of the electricity transmission project. (Xinhua/Ding Lei)

Maintenance staff work at a converter station in Hui Autonomous Prefecture of Changji, northwest China's Xinjiang Uygur Autonomous Region, Oct. 12, 2020. A converter station on an ultra-high-voltage direct current transmission line transmitting electricity from Xinjiang to Anhui in east China started maintenance on Monday. During the 13-day maintenance, 5G technologies will be employed to ensure the smooth workflow of the electricity transmission project. (Xinhua/Ding Lei)

A maintenance worker monitors the maintenance process on a screen at a converter station in Hui Autonomous Prefecture of Changji, northwest China's Xinjiang Uygur Autonomous Region, Oct. 12, 2020. A converter station on an ultra-high-voltage direct current transmission line transmitting electricity from Xinjiang to Anhui in east China started maintenance on Monday. During the 13-day maintenance, 5G technologies will be employed to ensure the smooth workflow of the electricity transmission project. (Xinhua/Ding Lei)

Maintenance staff work at a converter station in Hui Autonomous Prefecture of Changji, northwest China's Xinjiang Uygur Autonomous Region, Oct. 12, 2020. A converter station on an ultra-high-voltage direct current transmission line transmitting electricity from Xinjiang to Anhui in east China started maintenance on Monday. During the 13-day maintenance, 5G technologies will be employed to ensure the smooth workflow of the electricity transmission project. (Xinhua/Ding Lei)