The Wanning Bridge, an integral part of Beijing's Central Axis, is a historical testament to the city's rich past. Built during the Yuan Dynasty, it is also known as the Backdoor Bridge due to its location outside of Di'anmen, and it intersects with the Grand Canal cultural belt. This bridge is not only a crucial cultural landmark but also a symbol of the ancient city's commercial prosperity. As a preserved relic from the Yuan Dynasty, Wanning Bridge's significance is further highlighted by its designation as a World Cultural Heritage site, marking it as a precious piece of history in the heart of Beijing.