Drum tower: the drum tower is used for more reporting, the station guard, the news celebration. Jar city yi drum tower for cross ridge three double-hipped roof structure, square, three layers from top to bottom, up to four zhangs three feet five inches, city inn is, after the landmark buildings, issued by the ministry of posts and telecommunications commemorative stamps "ancient jar city yi" is given priority to with the design of the picture. The two plaques of the "state line" above the drum tower and the "post - mail order" are the finishing touches, indicating the importance of the drum tower to the post station. Because of this, the rulers of all dynasties attached great importance to the postal service and ensured the smooth of the post. There are black marble inlaid on the bottom of the drum tower, and the marble is engraved with the book of the major, the post and the memorial. The drum tower was the commanding point of the city at that time, standing on the drum tower, with a view of the beijing-hangzhou grand canal nearby, the zhenghu pagoda in the tang dynasty, and the sky and sky of the lake, etc.
