A staff member works at a gas station in Shangqiu City, central China's Henan Province, May 1, 2024. International Workers' Day is observed annually on May 1. (Photo/Xinhua)

Constructors work at the new Hefei West Railway Station in Hefei, east China's Anhui Province, May 1, 2024. (Photo/Xinhua)

A man produces steel products at a production line of Magang Group in Ma'anshan City, east China's Anhui Province, May 1, 2024. (Photo/Xinhua)

Staff members work at a warehouse of Ganglu Iron & Steel Co., Ltd. in Tangshan, north China's Hebei Province, May 1, 2024. (Photo/Xinhua)

Staff members check the body of a bullet train at a train maintenance workshop in Nanning City, south China's Guangxi Zhuang Autonomous Region, May 1, 2024. (Photo/Xinhua)

A drone photo taken on May 1, 2024 shows workers of the China Construction Third Bureau Co., Ltd. working at a construction site in Wuhan, central China's Hubei Province. (Photo/Xinhua)