What are the taboos for building pavilions in the courtyard?

Buxus macrophylla has no feng shui taboo, and plants are feng shui taboo: mulberry can't be planted in front, willow can't be planted behind, and ghosts can't be planted in the courtyard. (Yang) Only the Qinglong is allowed to soar, and the white tiger is not allowed to look up (the plants on the left of the Qinglong must be taller than the white tiger on the right). When you are away from home, you can't plant trees to block money. There are old people and children at home, so you can't grow poisonous and odorous plants that are harmful to people: taro, Lys.