Introduction to the ancient post road: The Xinchang ancient post road is 45 kilometers long. It runs through the long street of Patzhu, the stone steps of Huishuling and the mountain road from Tianmu Temple to Lengshuikeng. The original appearance of the ancient post road is still preserved. The remaining small stone Buddha shops and Guanling shops on the post road can still see the old appearance of the post shops. It is also known as "Xie Gongdao" because it was pioneered by Xie Lingyun, a poet of the Jin Dynasty. There are still many relics that have been passed down through the ages, such as Taoyuan Cave and Sima Hui Bridge where Liu Ruan met immortals.