The main hall on the main road of the mansion is called Yin'an Hall, which is the place where major ceremonies and celebrations are held. Yin'an Hall is equipped with screens, thrones, ceremonial items and sacrificial vessels. In the early 20th century, Yin'an Hall and the East and West supporting halls were destroyed by fire and only the foundation site remains. The present Yin'an Hall and the East and West supporting halls are rebuilt according to the base site.