Heishuiguo Site: In fact, this name is not accurate, because the name is only available in the Qing Dynasty, and the reliable statement is from Heihe. But this ancient city appeared earlier than Zhang Shu. First, Xiaoyue's country was founded here, then the Xiongnu, and then the West Han Dynasty. The battle of Huo went to the sick thousands of miles to attack the Hunnu occurred here, Jin Ge iron horse swallowed thousands of miles like a tiger, became famous in the first war, beheaded the enemy 8,000, won the seal of the wolf, that year he was only 18 years old. Since then, the emperor of Han Wu has set up Zhangye County here, equivalent to today's Shenzhen, is the earliest special economic zone, the ancient city of the year in the city of Jialin is a bustling, now, the wind is early by the rain and the wind blows, even the Heihe has been changed several times, Bohai Sea has become a mulberry field. The Heishuiguo ruins are divided into two cities in the north and south. The south city where the photo is located is built on hundreds of Han tombs. The ancient city is full of Han bricks and various dynasties of pottery fragments, through the woods in the distance, and prehistoric human ruins that have only been discovered soon. It is really inexplicable that such a beautiful place does not charge tickets and there are no tourists.