Many years ago, I learned about Zhaozhou Bridge in the elementary school textbook. It is the earliest preserved stone arch bridge in China. It was built in the Sui Dynasty and has a history of more than 1,400 years. Today's Zhaozhou Bridge has become an attraction with a ticket of 40 yuan, which is one of the most famous scenic spots in Shijiazhuang. Zhaozhou Bridge, also known as Anji Bridge, is located on the Weihe River in Zhao County, Shijiazhuang City, Hebei Province. The designer is Li Chun, a famous craftsman of the Sui Dynasty. However, there is not much record of Li Chun in history, except that he knows nothing about his construction of Zhaozhou Bridge. The Sui Dynasty ended the rule of separation between the Northern and Southern Dynasties and once again completed China's reunification. At that time, Zhao County was the only place to go north and south. North Shangyu County went south to Luoyang. A Weihe River blocked traffic. The court decided to build a bridge on the Weihe River to end the inconvenient traffic situation. Li Chun was designed and built. Zhaozhou Bridge is not big, with Zhaozhou Bridge as the core, and several other attractions have no special features. A new bridge next to Zhaozhou Bridge has long replaced the access function of Zhaozhou Bridge. But at first glance, I saw Zhaozhou Bridge. There is not much surprise. It looks very ordinary. But 1400 years ago, this was definitely the highest achievement in the bridge industry. An open shoulder arch like this, Europe did not appear until the mid-19th century, more than 1200 years later than our country.