The project is located in Yueyang county, Hunan, China. In celebration of the 60th anniversary of Yueyang County No.3 Middle School, the client decided to sponsor a new indoor playground doubling as a lecture hall with the purpose of creating better sports space and invigorating the regularly planned campus. The newly-built indoor playground lies at the southwest corner of the campus, where there’s an altitude difference between the main teaching area and the outdoor playground. Instead of sitting simply at either side, the building stretches across the altitude difference, thus forming a natural link between the teaching area and the playground. The activity space, which lies at the lower side can be accessed from the front square through the curved steps, which can serve as grandstands when needed. Natural ventilation and lighting serve as major sustainable strategies to improve thermal comfort and reduce the cost of equipment and maintenance. The integration design approach takes form, space and sustainable strategies into consideration simultaneously. Cast-in-situ methods and prefabrications have been both applied in the construction to alleviate the impact on the campus. The neat work of red bricks, with characteristics of artisan craftsmanship, is designed integrally with industrial building parts, offsetting the monotony of an industrialized building with its sense of artistry and freedom. The color and pattern of the main building resembles the abstraction of Yueyang’s topography, as well as the distribution of its mountains and waters, providing the students with more fun and interaction through the power of design.