Introduction to Sanyi Bridge: First built in the Qing Dynasty and later restored on July 1, 1999, there is a stone arch bridge named Sanyi Bridge over Woniu Spring. This bridge was originally named Yunhe Bridge, but was later renamed after three martyrs donated funds for its reconstruction. It is 7 meters long and 1.6 meters wide. The bridge pillars are carved from bluestone, and there are traditional patterns such as two dragons playing with beads and unicorns on the railings. The stone tablet standing at the east end of the bridge was discovered and salvaged during the dredging of the spring pond.