The Luding Bridge is famous for the history that the Red Army crossed Dadu River under the enemy’s heavy fire during the Long March. There is a line Mao Zedong’ s poem“ The Long March”, that “the high cliff is warm under the sunshine in Jinsha River, while the iron chains of Luding Bridge is cold on Dadu River.” The Luding Bridge, which is a suspending iron chain bridge, is spanning 100 m over Dadu River. The bridge was first built in Qing Dynasty and has been the key passage from innate Sichuan to Kangzang Plateau for over 270 years. There is an inscribed board with the characters “The Luding Bridge” on it written by Emperor Kangxi in the head of the bridge, and a tablet in the east of the bridge which approved that the bridge was built by the Emperor Kangxi. The Luding Bridge is a key cultural relic under state-level protection, and there is an exhibition hall, which has shown the fierce fighting of Red Army “taking Luding Bridge by storm".