Introduction to Longwei Road: The foundation of Hanyuan Hall is 15 meters higher than the lower slope. In order to facilitate the meeting of officials, two parallel slope masonry steps were built in front of the hall, with a total length of more than 70 meters. Whenever there is a court meeting, the ministers will come up through these two roads. Looking north from Danfeng Gate, these two steps look like a dragon born with its tail hanging down. It is extremely spectacular, so it is called the Dragon's Tail Road.