Kun Shi Pinghan introduced: There are two large wooden plaques upstairs. One is the "Zhenshuo Spit" plaque hanging on the south side of the building. It is 6 meters long and 2 meters high. It was copied according to the original in 1987; the other is on the north side when Emperor Qianlong of the Qing Dynasty inspected the Mulan Paddock in Saibei in 1745 and passed by Xuanhua. The large plaque "Kun Jing Ping Han" handwritten by that time is 2.4 meters high and 6.6 meters long, implying that Xuanhua is the barrier of Beijing. The frame of the large plaque is carved with flying clouds and mosquito dragons in different states. The pattern is exquisite and the carving is fine, which has high artistic appreciation value.