2. Don't face the bed, because it will have a bad influence on yourself.
3. The location of cockroaches should be visible to the owner, so they should not be higher than the head of people.
Don't point your head at the main entrance, because the main entrance is where the god of wealth or the door god is in charge, and you have no right to ask.
Be sure to put its mouth at the door when you put it. If there is no place to put it at home, you can put it outside the window, but only if the window can't face the toilet.
As the ninth son of the dragon, you can't live without water, so always offer a glass of water in front of you, but be careful that the cup can't be higher than your head.