The house in my hometown has been unoccupied for ten years, and the roof leaks and the wall cracks. On rainy days, there is water at home, so people can't live in it. Will it affect Feng Shui? Do you need to open it?

The first is that "the geomantic omen of a house will affect people or creatures inside". To say that it affects Feng Shui means to enlarge the Feng Shui influenced by this house to the whole area. Secondly, there is no one living in it, so you don't have to think so much. If you want to live, you can only repair or rebuild. This is a mansion, not a mansion.