This project is one of the demonstration projects of architect Hsieh in mainland china. The auditorium employs common local greenhouse frame as its structure, covering plastic films and fixing the net with ropes. Semi-basement is also employed for absorbing earth temperature and providing the earth for on-site wall, which both reduced work amount& construction cost and elaborated the excellent thermal performance of earth. The whole structure has been simplified by composing angle steel/ round steel/ C-steel which saved special constructors and facilitates. The construction cost is at 75,000 RMB.