1. You can put a pair of bronze dogs at the door, which can play the role of dissolving the wall knife.
2. You can also hang a gossip mirror at the door, which can play the role of dissolving the wall knife.
3. You can also place a pot of plants at the door to dissolve the wall knife.
In short, there are many ways to solve the wall knife, and you can choose the method that suits you according to your actual situation.