Core Insights - The article highlights the implementation of a clean energy heating system in Zhangbei County, utilizing solar energy and geothermal heat to provide sustainable heating solutions for local residents [2][3] - The introduction of a mushroom cultivation industry in the region is presented as a successful economic development strategy, allowing for year-round production and increased income for local farmers [4] Clean Energy Heating System - The clean heating system combines solar panels and a ground-source heat pump, which allows residents to use solar energy for heating during sunny days and geothermal energy during colder nights [3] - The cost of heating has significantly decreased from over 2400 yuan to approximately 1200 yuan per household during the heating season, benefiting around 1260 households in the area [3][4] Mushroom Cultivation Industry - The establishment of a mushroom processing enterprise in collaboration with Baoding City has led to the utilization of over 170 acres of land for mushroom production, creating 88 greenhouses and providing income opportunities for more than 30 local families [4] - The total cultivated area for mushrooms in Zhangbei County has reached over 3700 acres, yielding an annual production of 18,000 tons and generating a revenue of 168 million yuan [4]