In some cases, it cannot be changed or is not easy to change. Generally speaking, in the general direction of geomantic omen, Long Mai can't be changed, and it's not easy to change if there are problems in the vertical direction, especially those who are riding a seam and being withdrawn, unless they are demolished and rebuilt. And sand can't be changed in general, especially in cities or some distant sand. As for water and caves, it's similar. If you are basically wrong, you can't change it.
Besides these, there are many other things that can't be changed, such as rushing and smashing from outside. These things can only be changed by some shields and instruments, and they cannot be fundamentally eliminated.
As for what can be changed, such as changing the door and simply decorating, it only changes the small environment and has no impact on the big environment.
So, what is the specific situation, you always have to look at it in detail to know.