Workers work at construction site of T3B terminal project of Chongqing Jiangbei International Airport in China

A worker cuts a steel part at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)

A worker works at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)

A worker welds at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)

A worker cuts a steel part at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Photo by Yu Lei/Xinhua)

A worker operates a forklift to transport materials at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)

A worker works at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Photo by Yu Lei/Xinhua)

A worker welds at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)

A worker carries a steel part at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)

A worker drinks water at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)

Workers work at the construction site of the T3B terminal project of Chongqing Jiangbei International Airport in southwest China's Chongqing, July 11, 2022. Builders take shifts working for the construction of the T3B terminal project of Chongqing Jiangbei International Airport with preventing heatstroke measures in place. (Xinhua/Huang Wei)