Introduction to the middle courtyard: There is a lotus pond in the courtyard, a bridge is built in the pond, and there is a Bagua Pavilion with octagonal corners in the center, which is quiet and elegant. Surrounded by red walls, the fragrance of lotus flowers in the pool is refreshing. There are three gates in the north of the pool, the middle gate is the Meridian Gate, with the inscription "Fairy Cave", and the east and west sides are the Moon Gate.