Brief introduction of covered bridge.

Leisure bridge-precious cultural heritage.

It is an ancient and unique bridge type of "crossing the river, building a corridor on the bridge, protecting the bridge on the corridor, and integrating the bridge with the corridor". Because it looks like a rainbow, it is also called Hongqiao and Hongliang Wooden Covered Bridge. Because there are bridge houses on the bridge, it is commonly known as "CuO Bridge". Professor Tang Huancheng, a bridge expert, named it a through wooden arch bridge according to its arch structure characteristics in the history of China Science Bridge. Due to the use of short structural materials, it has formed a long span, which is considered as a unique structure in China in the history of bridges in the world. Covered bridges with wooden arch structure were once popular in the Northern Song Dynasty. They are living fossils of wooden bridges in China, and they are the ones with the highest technical content among traditional wooden bridges in China. At the same time, they have high traditional aesthetic value. The "Hongqiao" with wooden arch structure was popular in the Central Plains during the Northern Song Dynasty. Hongqiao across the Bianshui River in the famous painting Riverside Scene at Qingming Festival in the Northern Song Dynasty is a typical representative of the covered bridge. After the demise of the Northern Song Dynasty, it was annihilated by historical dust together with the dry and silted Bianhe River, but it was rediscovered in the mountainous areas of Fujian and Zhejiang more than 900 years later. The History of Science and Technology in China claims that the covered bridge is unique in China in the history of bridges in the world, and the covered bridge in Fujian is rated as "the middle bridge in Fujian is the best in the world".