What is the historical origin of stepping on the bridge in Jishui, Mianyang, Sichuan?

Jishuiqiao Festival in Mianyang, Sichuan is a traditional folk cultural activity of Han nationality. Visiting the Bridge is a large-scale activity spontaneously organized by the people of Jishui Town, Anzhou District, Sichuan Province. According to Sogou Encyclopedia, the bridge treadmill is a traditional folk activity, which is a large-scale activity spontaneously carried out by people in Jishui Town 10 village committee in Anxian County, Sichuan Province. In 2009, it was listed in the second batch of intangible cultural heritage list in Sichuan Province, and it is one of the outstanding ethnic and folk festivals in Sichuan Province.

It is said that the historical origin of Treadbridge Society can be traced back to the Tang Dynasty. According to the old custom of the Han nationality, after the bridge is completed, Mr. Feng Shui should be asked to choose a good day to hold the ceremony of stepping on the bridge. Before the ceremony, no one can pass, especially women (especially pregnant women). When the ceremony of stepping on the bridge is held, the birthday boy (preferably a centenarian), the squire and celebrities should be invited to attend.