Zhaozhou Bridge, also known as the Anji Bridge, is one of the most famous ancient bridges in China and even the world. It is located in Zhao County, Hebei Province, spanning the Xiao River. The bridge was built during the Sui Dynasty (581-618 AD) under the supervision of the master builder Li Chun. It is considered a masterpiece of ancient Chinese architecture and engineering.

The Zhaozhou Bridge is made entirely of stone, showcasing the advanced construction techniques of its time. It spans approximately 50.82 meters with an arch span of 37.02 meters. This single-span arch design was groundbreaking at the time, allowing for greater water flow and reducing the risk of damage during floods. The bridge's elegant arch not only serves a functional purpose but also adds to its aesthetic appeal.

One of the most remarkable features of the Zhaozhou Bridge is its lack of piers in the middle. Instead, it relies on its robust arch structure to support the weight of the bridge and the traffic above. This design was revolutionary and demonstrated the ingenuity of its builders. The bridge has survived over 1,400 years of natural disasters, including floods and earthquakes, which speaks volumes about its structural integrity.

In addition to its engineering achievements, the Zhaozhou Bridge is adorned with intricate carvings and artistic elements. These decorations include mythical creatures, flowers, and other traditional Chinese motifs, reflecting the cultural and artistic influences of the period.

The Zhaozhou Bridge has been recognized as a national treasure and has been listed as a key cultural relic protection site in China. It continues to attract visitors from around the world who come to admire its beauty and learn about its historical significance. The bridge serves as a testament to the ingenuity and craftsmanship of ancient Chinese engineers and remains an important symbol of China's rich architectural heritage.