In rural areas, many people like to build their own new houses on old houses, but in fact, such behavior has great security risks. If the old house has a long life, building a new house on the basis of the old house will cause instability of the foundation and may even cause collapse. Therefore, the ancients did not encourage people to do such behavior, so now we should listen to the ancients and not do such a thing.
In addition, the land problem in rural areas is a very important factor. When old houses are demolished and rebuilt, there will be land problems. Therefore, in order to avoid this kind of trouble, people choose to build a cover on the old house, which can save costs and avoid troublesome problems. Why not? However, we should also consider security issues, and the safety of human life is the most important issue.
Whatever the reason, I hope people will stop doing such things. Adding a cover to an old house is a big security risk. If such a problem does not appear, that's fine, but if it does, it may cause casualties. Therefore, as the saying goes, it is very reasonable that the wall falls and everyone pushes it. I hope everyone can pay attention to this problem and don't let it happen.