The patio of the house gathers rainwater, and when the rainwater flows into the front of the hall, it is also called "Four Waters Return to the Hall". The ancients believed that water is wealth with the meaning of "the flow of wealth from all sides. The concept of "four waters return to the hall" is integrated with the water outlet of the tea tray, and the tea flows down the arc of the tea tray to reproduce the scene of "sprinkling gold and silver. The whole process is freehand and full of life meaning.