A trench collapsed six meters behind the house. A tree can be planted behind the house to supplement the feng shui. There is indeed a bad impact on feng shui if there is a hole behind the house. Just fill in the hole behind the house or plant trees to block the hole. However, the type of tree is still very particular. It is recommended that you plant peach trees, orange trees or palm trees that can assist the feng shui of your home. To be on the safe side, you can ask a professional feng shui master to take a look and determine whether it is appropriate based on the actual situation. Better.