A man works at a workshop of a mechanical equipment enterprise in Changli County, north China's Hebei Province, April 2, 2024. To advance high-quality economic development, local authorities of Changli has guided enterprises to focus on core technologies and improve innovation ability. (Xinhua/Yang Shiyao)

People work at a workshop of a mechanical equipment enterprise in Changli County, north China's Hebei Province, April 2, 2024. To advance high-quality economic development, local authorities of Changli has guided enterprises to focus on core technologies and improve innovation ability. (Xinhua/Yang Shiyao)

A man works at a workshop of a bike enterprise in Changli County, north China's Hebei Province, April 2, 2024. To advance high-quality economic development, local authorities of Changli has guided enterprises to focus on core technologies and improve innovation ability. (Xinhua/Yang Shiyao)

A man works at a workshop of a food processing equipment enterprise in Changli County, north China's Hebei Province, April 2, 2024. To advance high-quality economic development, local authorities of Changli has guided enterprises to focus on core technologies and improve innovation ability. (Xinhua/Yang Shiyao)

A man works at a workshop of a mechanical equipment enterprise in Changli County, north China's Hebei Province, April 2, 2024. To advance high-quality economic development, local authorities of Changli has guided enterprises to focus on core technologies and improve innovation ability. (Xinhua/Yang Shiyao)

People work at a workshop of a mechanical equipment enterprise in Changli County, north China's Hebei Province, April 2, 2024. To advance high-quality economic development, local authorities of Changli has guided enterprises to focus on core technologies and improve innovation ability. (Xinhua/Yang Shiyao)

Editor: Li Wenpei, Mi Wenting (Intern)