The self-built house in Changsha is near Changsha Medical College. The self-built house in Changsha is located near Changsha Medical College. The collapsed self-built house in Changsha is located near Changsha Medical College, which can be said to be very close to the north gate of the Medical College. College students' strong spending power also brings huge business opportunities. Therefore, commercial pedestrian streets such as Houyi Street and Houer Street were born around the Medical College. Many people use their own self-built houses for rent for profit, and the nature of houses has also become operational self-built houses.