The project is located in Hangzhou, Zhejiang Province, with a building area of 26110 square meters and a truss structure. The main truss is mainly a triangular truss with a span of about 70.6 meters. The north side is a semi-circular truss, and the children's playground is mainly a truss structure. The roof structure is a flat truss, with a top height of 12.8 meters.