Basic geomantic omen of new buildings

The home faces a mountain, and there is water under the mountain; At the same time, it is still in a deep alley with a hospital behind it. It depends on the location of the mountain, the height of the house and whether it is evil. The direction of the water under the mountain is good water or bad water. Is there a bomb shelter behind the hospital, how strong the hospital is and so on. What should be put in the foundation of the rebuilt house to change the feng shui? I heard that the above points are all places with bad feng shui, and I have seen someone throw copper coins under the foundation of a new house. What needs to be paid attention to in rebuilding houses is that the time is too old, and the details include monthly construction and so on. If you want to change the foreign bureau first, you need to make a detailed survey before you decide. Because you are renovating, the variables are smaller, but you can take the opportunity to make up for many previous problems, or set up a door to change direction and get new luck. As for what you said, some people put copper coins, that's a folk custom problem, and it's for the foundation boss. Having said that, please donate at least 100 yuan to local volunteer associations or other charities, and the rest will be discussed later.