Strictly speaking, illegal buildings must be demolished, and the land allocated by the state cannot be used for building businesses, especially education, let alone rebuilding businesses. Since then, the use and nature of the land have been changed, which is strictly prohibited by the state. If someone reports it, it must be removed in principle. However, there are exceptions to everything. If we can negotiate and communicate with the local government and planning bureau and reach a consensus, it is possible to change the street land to commercial.