Protect the essence of historical and cultural traditions, protect urban historical information, and repair damaged information. According to the relevant information, Abstract: Protecting the essence of historical and cultural traditions, protecting urban historical information, repairing damaged, dilapidated and dangerous parts, rectifying the old as before, repairing the old as before, and respecting history are the first. We should also deeply realize that ancient buildings are the real wealth of the city, even if they are just a section of wall, we should take them seriously.