Introduction to Dagong Bridge: At the beginning of the last century, due to the large number of silk factories on the canal, female workers took ferries to cross the river in order to travel. A pregnant female worker from the Zhenyi Silk Factory accidentally drowned while taking a ferry. The owner of the factory, Xu Daosun, decided to build a bridge and paid for the bridge construction costs through the factory charity association "Yongxi Hall". Due to the limited resources and limited resources, the cost of building the bridge varied widely, making it difficult to implement it at the moment. In the midst of anxiety, the industrial and commercial tycoon Rong immediately used the donations from the "Thousand Bridges Club" (also known as the Hundred Bridges Company) to fully fund the project, and it was finally completed in April 1930. At that time, the Rong family had the Grand Duke Library, so the bridge was named the Grand Duke Bridge.