Photo taken on June 24, 2020, shows the 800±kilovolt ultra-high voltage (UHV) power line under construction. China's first ultra high-voltage power superhighway for transmitting clean energy extends 1,600 km across five provinces, from northwest China's Qinghai Province to central China's Henan Province. The project is scheduled to start operation in 2020. (Photo/China News Service)

Photo taken on June 24, 2020, shows the 800±kilovolt ultra-high voltage (UHV) power line under construction. China's first ultra high-voltage power superhighway for transmitting clean energy extends 1,600 km across five provinces, from northwest China's Qinghai Province to central China's Henan Province. The project is scheduled to start operation in 2020. (Photo/China News Service)

Photo taken on June 24, 2020, shows the 800±kilovolt ultra-high voltage (UHV) power line under construction. China's first ultra high-voltage power superhighway for transmitting clean energy extends 1,600 km across five provinces, from northwest China's Qinghai Province to central China's Henan Province. The project is scheduled to start operation in 2020. (Photo/China News Service)

Photo taken on June 24, 2020, shows the 800±kilovolt ultra-high voltage (UHV) power line under construction. China's first ultra high-voltage power superhighway for transmitting clean energy extends 1,600 km across five provinces, from northwest China's Qinghai Province to central China's Henan Province. The project is scheduled to start operation in 2020. (Photo/China News Service)

Photo taken on June 24, 2020, shows the 800±kilovolt ultra-high voltage (UHV) power line under construction. China's first ultra high-voltage power superhighway for transmitting clean energy extends 1,600 km across five provinces, from northwest China's Qinghai Province to central China's Henan Province. The project is scheduled to start operation in 2020. (Photo/China News Service)