What does feng shui mouth mean?

Land is the place where real dragons knot. Abbreviation: land. Wind: The place of Zhenlong Cave is the most taboo against wind blowing. We must hide the wind and collect gas. The real dragon cave, once the wind blows, becomes a rotten place. The nozzle flows from one place, and the water comes from both sides of the dragon and other directions. The place where the water flows out is the nozzle of this game.