Introduction to silkworm model: Further forward, there is a wide open space. In the center of the open space is a circular fountain surrounded by black iron railings. Behind the pool, on a pedestal supported by four red pillars, stands a giant stone-carved cocoon. There is a red word "Lu" written on the wall below the cocoon, which means that the people of Hanshan Town make money by raising silkworms and reeling silk.