The Chuihong Bridge (“a bending rainbow”), once named the Liwang Bridge (“convenient transportation”), is commonly known as the Chang Bridge (a long span). The remaining east end of the bridge has 10 arches with a length of 59.38 metres, while the west end 7 arches with a length of 32.5 metres. The materials used are mainly welded tuff (Wukang stone), limestone and granite. Several arches on the west end are still buried underground today. The bridge was first built in the 8th year of Emperor Qingli’s reign of the Song Dynasty (1048), featuring a wooden structure. In the 2nd year of Emperor Deyou’s reign (Kublai Khan’s reign) of the Yuan Dynasty, the bridge was destroyed during the war but was rebuilt with 85 arches in the same year. The number of arches was increased to 99 in the 11th year of Emperor Dade’s Reign (Oljeitu Khan’s reign) of the Yuan Dynasty. In the 2nd year of Emperor Taiding’s reign (Yesün Temür Khah’s reign) of the same dynasty (1325), the bridge underwent a re-building by replacing wood with stone. The number of arches was 62 then and was later expanded to 72. Several renovation and repair projects were conducted during the Ming and Qing Dynasties and the Republic of China period. The Chuihong Bridge was listed as a cultural and historical relic site under the provincial-level protection in 1957. May of 1967 witnessed its collapse. Suzhou Municipal Wujiang District People’s Government launched two renovation programmes for the two ends of the bridge in 1996 and 2005 respectively. The bridge was re-listed as a cultural and historical relic site under the provincial-level protection in June, 2006 and one under national-level protection in 2019.