Jiaotai Hall, located between Gan Qing Palace and Kunning Palace, means "heaven and earth are in harmony, well-being and happiness". Founded in the Ming Dynasty, it was rebuilt in the third year of Jiaqing in the Qing Dynasty, namely 1798. It is a square temple with a gilded top and a dragon and phoenix pattern. During the Ming and Qing Dynasties, this hall was the place where the Queen's birthday celebration was held. The so-called queen's silkworm-kissing ceremony in Qing dynasty needs to check the preparations for the ceremony. Precious Qing dynasty seals are also collected here, in a treasure box covered with yellow silk. Now, the treasure chest is still displayed in the Jiaotai Hall in its original position. The dzmz displayed in Jiaotai Pavilion is a wooden cabinet imitating China Pavilion, which is nearly 6 meters high and divided into three floors: upper, middle and lower floors. There is a small staircase behind the bell tower. Climbing stairs can wind the clock.