Li Yingxing conducts temperature measurement on a power transmission tower with an infrared thermometer in Pingxiang, south China's Guangxi Zhuang Autonomous Region, Aug. 10, 2023. Wen Xianwen, Yao Zhengqiang, Deng Yiqiang and Li Yingxing are members of a team of maintenance personnel from the Guangxi branch of China Southern Power Grid's Pingxiang power supply station. Workers of the team, which was founded in 1974, have patrolled nearly 250,000-kilometer-long power transmission lines over the past 49 years. (Xinhua/Fei Maohua)