Workers assemble air conditioners at a factory in Qingdao, East China's Shandong Province, on May 16, 2023. Air conditioning enterprises have entered the peak season of production and sales and are running at full speed. In 2022, China's exports of central air conditioning equipment reached 13.5 billion yuan ($1.9 billion), a year-on-year increase of 21.0 percent. Photo: cnsphoto