In the middle of the ceiling is the design of two dragons playing with pearls. The pearls were made of glass and painted with mercury.

• 在顶蓬的中间是向上隆起的藻井，中间卧有两个蟠龙，龙头下探，口衔宝珠。宝珠是用玻璃做成以水银喷涂。