The annual heating season of Hongyanhe lasts for 152 days.

红沿河每年的供暖持续152天。

A warm autumn postponed the heating season, allowing gas-storage facilities to be filled to the brim.

秋天的温暖气温导致取暖季延迟，储气设施里装满了无法输送出去的天然气。

In the past, local heating was mainly provided by decentralized small boilers mostly using coal, which has low thermal efficiency and wastes energy, putting pressure on local environmental protection during winter heating season.

过去，当地供暖主要由分散式小锅炉提供，主要使用煤炭，热效率低，浪费能源，冬季供暖时，给当地环境保护带来压力。