Introduction to the Results: The system includes a structure integrated with the building—the kang (including an internal flue system), radiant heating hot water coils, indoor circulation small water pumps, distributors, collectors, expansion tanks, exhaust valves, temperature control valves, and domestic gas boilers. This invention combines the advantages of a clean indoor environment from the hot water heating system with the energy-saving benefits of traditional low-temperature radiant heating of kangs. Whether using a centralized heating system or a decentralized heating system, it can achieve diversification in heat source selection. At the same time, when combined with the kitchen smoke waste heat heating system, it not only ensures the comfort requirements for winter heating but also maintains the traditional living habits of residents in small towns and cities in the northeast. It achieves both energy saving and environmental protection, meeting the requirements of sustainable development. Application field: Functional characteristics of northern village construction in China: 1. Simple preparation operation, using acetone/water as an oil-water two-phase system, To obtain stable drug sustained-release microspheres. Low-temperature hot water coil kang radiation collection system diagram 2, Microspheres are non-adhesive, with better release stability than fenofibrate raw material and capsules. 3, By derivatization, it can meet the requirements of more lipophilic drugs.