Photo taken on Mar. 30, 2021 shows maintenance staff working at a converter station in south-eastern China's City of Suzhou. The Suzhou converter station is known as the first ultra-high-voltage converter station in Jiangsu Province, which undertaken the transmission of power in west China to the east. (Tang Dehong/Guangming Picture)

Photo taken on Mar. 30, 2021 shows maintenance staff working at a converter station in south-eastern China's City of Suzhou. The Suzhou converter station is known as the first ultra-high-voltage converter station in Jiangsu Province, which undertaken the transmission of power in west China to the east. (Tang Dehong/Guangming Picture)

Photo taken on Mar. 30, 2021 shows maintenance staff working at a converter station in south-eastern China's City of Suzhou. The Suzhou converter station is known as the first ultra-high-voltage converter station in Jiangsu Province, which undertaken the transmission of power in west China to the east. (Tang Dehong/Guangming Picture)

Photo taken on Mar. 30, 2021 shows maintenance staff working at a converter station in south-eastern China's City of Suzhou. The Suzhou converter station is known as the first ultra-high-voltage converter station in Jiangsu Province, which undertaken the transmission of power in west China to the east. (Tang Dehong/Guangming Picture)

来源：GMW.cn