Group 1 - The heating season has begun in northern China, with cities like Tangshan and Cangzhou starting early heating to ensure residents stay warm during winter [2][4] - In Cangzhou, heating was initiated three days ahead of the scheduled time, with 565 heat exchange stations monitored for operational status [4] - The heating service department in Cangzhou has established four service centers and 24-hour support for consultations, complaints, and repairs, ensuring prompt response to emergencies [4] Group 2 - Zhengzhou has entered the trial operation phase of its heating system, with 16 heating plants gradually starting to provide heat [5] - The city is promoting new energy heating solutions while enhancing smart heating network systems for better control and efficiency [5][8] - In Zhengzhou, air source heat pump equipment is being installed in residential areas, and a large electronic screen displays real-time data from the heating system [8] Group 3 - In Jinan, the heating adjustment process has officially started, marking a busy period for heating departments [10][11] - Heating managers, like Zhao Qiang, are addressing numerous user repair requests, with a significant portion being simple issues that can be resolved easily [13] - The service approach includes on-site assistance for elderly residents who may struggle with basic troubleshooting tasks [13]