The project is located in Hangzhou, a poetic city in China, adjacent to a lush hill. The master plan form fits the landscape, and the curved building embraces the green nature to the greatest extent. The curve of the plane changes, and part of the land on the northside of the site is given up as a public landscape space of the city - a small street garden. The overhead space on the ground floor forms a visual corridor for the mountains and streets, encouraging nearby residents to walk into the park. The color of the building comes from the color change of the four seasons of this mountain.