Sit on the fence facing south and leave some water outlets.

The number of water outlets is calculated according to the size of the yard, and it is enough to leave two water outlets in the larger yard.

But the average family has only one exit, depending on the specific situation. For example, if the drainage in the yard is not smooth, two water outlets can be made. If the yard is well designed, the drainage of water and purified water can also be an exit. This is not specific. Don't be too superstitious about other people's opinions and opinions. Everything is for your own good.