Changing the facade of a house and opening doors and windows on non-load-bearing external walls shall be approved by the competent department of city planning administration. The addition of doors, windows and holes to the exterior wall of the main building can only be approved after the signature of the director of the engineering department. Excavation of staggered garden retaining walls and basements is prohibited. Change the facade of the house and open doors and windows on the non-load-bearing external wall. Changing the planning without authorization; Changing the original planning and design purpose of the house without authorization. If there is any violation, the relevant administrative department will order it to make corrections according to the scope of duties.