Highlights: Yunjing Courtyard is located in Pinganyi, Yuanjia Village, Hehuang Impression Ancient Town, Haidong City, Qinghai Province. It has B&B guest rooms, outdoor hot springs (glass dome), Private Pool hot spring rooms, supporting teahouses, gardens, etc. The project is a three-entry antique courtyard building with a new Chinese Zen style interior design, which is close to modern aesthetics and living habits. At the beginning of the design of Yunjing Courtyard, a softened water treatment system was customized according to the local water quality. After purification, mineralization, filtration, sterilization and disinfection, it was treated with hot spring equipment with Japanese hot spring core technology.