suspension bridges were first created in China, and slings developed from rattan cables and bamboo cables to chains. In the middle of the Tang Dynasty, there was an iron chain suspension bridge, which was more than 8 years earlier than in the West. The arch bridge was built in the middle of the Eastern Han Dynasty, with many forms and beautiful shapes, which are rare in the world.
Baqiao, Luoyang Bridge, Anping Bridge, Hudu Bridge, Shaoxing Bazi Bridge, Yinping Bridge and Chengyang Bridge are the representatives of Mu and Liang Shi Bridges. Xi 'an Baqiao Bridge, built in the Han Dynasty, is a wooden-beam stone pillar pier bridge. It uses four circular stone pillars to form a stone pillar (with stone pillars in the middle), and six stone pillars form a light pier. Wooden beams are added to the pier platform and a lime-soil stone slab bridge deck is laid. It is the pioneer of Shizhudun.
"Bridges in central Fujian are the best in the world" is a true portrayal of a large number of Liang Shi bridges built in central Fujian in the Song Dynasty (especially in the Southern Song Dynasty). In the 15 years of the Southern Song Dynasty, more than 7 Liang Shi bridges were built, including four or five long bridges over five kilometers. Anping Bridge, which is known as "no bridge in the world is long", was built in Shaoxing, Song Dynasty from eight to twenty-one years (1138-1151), with a length of about 2.5 kilometers, so it is also called Wuli Bridge, which is built with granite and is the longest existing ancient bridge in China. The Hudu Bridge (also known as Jiangdong Bridge) built in 124, its largest Liang Shi is 23.7 meters long, 1.7 meters wide, 1.9 meters high and weighs more than 2 tons. Even today, it is very difficult to mine, transport and erect such Liang Shi. In May, 1979, the departments concerned in China discovered the oldest existing Liang Shi Bridge-Jinjiang County Bridge and Xiaoqiao Bridge, both of which were built in the Taiping and Xingguo years of the Northern Song Dynasty (976-984). Shaoxing Bazi Bridge is a Liang Shi Bridge in the Song Dynasty. Its layout is very clever, which not only ensures land and water transportation, but also does not demolish houses or change streets during construction. Chengyang Bridge is located on Linxi River in Sanjiang Dong Autonomous County, Guangxi. It is a four-span wooden beam bridge with stone piers and outriggers. It was built in 1916, with a total length of 64.4 meters and four bridge holes, each with a clear span of 12.2 meters, a width of 3.4 meters and a height of 16 meters. Above the five piers, there are pagoda-shaped and palace-shaped bridge pavilions in national forms, and the eaves of the bridge pavilions are layered on top of each other, like wings flying, magnificent and spectacular. The whole bridge building doesn't need an iron nail or other iron parts, but it adopts tenon-groove combination or bamboo nail, but the structural connection is very firm. Chengyang Bridge's superb bridge-building technology fully demonstrates the outstanding wisdom and creativity of the Dong people in China.