A Sichuan Provincial Cultural Relics Protection Unit located on Jiangyang West Road in downtown Luzhou. An ancient strategic pass, it was first built of rammed earth during the Shu Han Dynasty, rebuilt in the 11th year of Chongzhen (Ming Dynasty), and renovated again in the 2nd year of Tongzhi (Qing Dynasty).
Bounded by the Tuo River to the north and the Yangtze River to the south, it resembles a giant dragon piercing the two rivers, hence the name. As the only land access to the city (which is surrounded by water on three sides), it was a key military stronghold.
On December 1, 1921, the Luzhou Uprising led by the CPC Chongqing Committee erupted. Liu Bocheng, serving as frontline commander, arrived in January 1927 and fought a decisive battle here against the troops of Liu Xiang, marking a glorious chapter in armed uprising history. In 1991, the city funded the restoration of the gate tower and erected the Luzhou Uprising Monument to commemorate the 70th anniversary of the CPC.