Introduction to Tianjie: After entering Nantianmen and going up two steps, you will find Tianjie. Tianjie has been like a street hanging in the sky since ancient times. Ancient pilgrims and current tourists have a deep impression of this street. The sky street, which is about a kilometer long, is covered with hotels, restaurants, and shops. According to records, Tianjie has been prosperous since the Qing Dynasty. At that time, some shop owners used real objects as signboards, such as "stick", "wooden bowl", "parrot", etc.