Zuoze Bridge, also known as Yili Bridge, is a bamboo cable bridge. The existing famous ones are Luding Iron Cable Bridge and guanxian Bamboo Cable Bridge built in Ming and Qing Dynasties. Crossing the cable bridge feels very thrilling, just as the ancients described the cable bridge: "People are hanging in the air, and if they don't quit in an instant, they will fall into a bottomless valley."
Many foreign bridge experts believe that cable bridges originated in China, pointing out that "China began to build suspension bridges about 3,000 years ago". Tang Dongjiebu (1385 ~ 1464, or Sangzhugu, which means "the living Buddha of the iron bridge") of the Tibetan people in the 14th and 5th centuries was an engineering and technical expert who built the iron cable bridge on the Yarlung Zangbo River and other rivers in Tibet at that time. It is said that he once drew a sketch of the iron cable bridge on the Yarlung Zangbo River, with a span of1.38m and a completion time of 1.420. It is the largest iron cable bridge in ancient China. There are towers at both ends of the bridge, which are only wide enough for people. At present, the earliest cable bridge that has been verified is the Ruxiang Bridge in Yizhou, Sichuan (now Chengdu). It was built in the Shoushi period of Qin Dynasty (25 1 year BC), and it crossed the south river channel more than 2,200 years ago, also known as Yixing Bridge, which was one of the seven bridges built in the shape of the Big Dipper at that time. In Yi Zhou Ji, Wang Bao of the Western Han Dynasty recorded that the street bridge was at the step of 100 south of Sima Xiangru House. During construction, three large iron vertebrae are used to tie the bamboo cable of the bridge column (there are only two iron vertebrae at present). The Biography of Huan Wen in the Book of Jin records that in the third year of Yonghe (347), when Huan Wen attacked Chengdu, he fought on the Ruxiang Bridge. It can be seen that after nearly 600 years, Rue Bridge is still there. Legend has it that Zhuge Liang once bid farewell to Fei Yi, who started his career in Soochow. In the early days of liberation, when we visited Father's Terrace in Sima Xiangru, we excavated a big iron vertebra under the ancient bridge foundation on the Jinjiang River west of Nanmen Bridge today, which proved that this was the former site of Rue Bridge.