The Lightning River is the upper reaches of the Luohe River, from the north of Yantun Tuguer Mountain in Cuba at the junction of Wuyuan and Fengning counties in Hebei Province, to the north of the south road bridge of the Black Cityzi Ranch in the Zhenglanqi into Inner Mongolia. Continue to flow north to the West Village of Dundahot Town, Zhenglanqi, fold to the northeast and flow through Shuangshan Reservoir, into Duolun, fold to the southeast in Baichengzi and Heifeng River, converge below the Weihe River, and once again flow into Fengning County, Hebei Province, near the lower reaches of Xishan Bay, passing through the Great Wall from Xifengkou, Running straight down, injecting Bohai Sea, the process is 877 kilometers.