Technicians check the grid power lines in Batang County, Southwest China’s Sichuan Province, Aug. 24, 2016. The 1,500 kilometers of transmission lines connecting power grids from Garze in Sichuan to Changdu in Tibet had its first major check this year. Technicians had to overcome difficulties such as burning sunlight and a shortage of oxygen at high altitude localities. (Photo: China News Service/Cao Zhigang)
