A worker debugs boilers' operation system at a heating company in Changchun, northeast China's Jilin Province, Oct. 19, 2022. Heating suppliers in northeast China have started services in response to the recent cold snap.(Photo: Xinhua)
A worker checks data at a heating company in Hulan District of Harbin, northeast China's Heilongjiang Province, Oct. 20, 2022. Heating suppliers in northeast China have started services in response to the recent cold snap.(Photo: Xinhua)
A worker checks data at a heating company in Hulan District of Harbin, northeast China's Heilongjiang Province, Oct. 20, 2022. Heating suppliers in northeast China have started services in response to the recent cold snap.(Photo: Xinhua)
A heating company starts its heating service in Changchun, northeast China's Jilin Province, Oct. 19, 2022. Heating suppliers in northeast China have started services in response to the recent cold snap.(Photo: Xinhua)