Because the decoration has been completed, many things in the original building are invisible and can only be seen on the surface. The first thing is to know whether all the switches and sockets in the house are enough. If not, consider how to change them. The second is to know whether there is water leakage in all positions of the house, which is the key to reduce future troubles; The third is whether there are problems with the main materials in the house, such as doors, cabinets, sanitary ware and lamps, and whether they are the same as those in the purchase instructions. There have been many cases of this problem, and there are a lot of incidents of shoddy; The fourth is whether the decoration process of the house is qualified, whether the handover position of the floor tile sideline is uneven, and whether the wall is not equal.