After crossing the Yangtze River, the number of cross flows is absolutely torrential. Xiao Wang Maifan was in a hurry and looked back at Zhongtian with mixed feelings. This is a poem by Wen Tianxiang, a national hero of the Southern Song Dynasty. Wen Tianxiang resisted Yuan's failure and was escorted from Guangdong to Dadu (now Beijing). He was so generous when he crossed the Hutuo River. Hutuo River was called Hulun River in the Warring States Period, Houchi River in the Qin Dynasty and Hutuo River in the Eastern Han Dynasty. On the north bank of the river, there is an ancient city that stands through vicissitudes. History is the root of positive definite. This is an ancient city with a human history of 7000 years, a city history of 2700 years and a city history of 1600 years, which embodies the vast Chinese civilization. The name of this ancient city is Zhengding. Zhengding, starting from remote ancient times, is connected to Yinghai in the east, Surabaya in the south, Taihang in the west and Hengshan in the north. Sitting in the sun of Bohai Sea is broad-minded, beautiful under the sun of water, majestic under the sun of Taihang Mountain, and leaning on its male under the sun of Heng Yue. More than 7,000 years ago, our ancestors branded the Paleolithic and Neolithic civilizations on this land and created a splendid civilization. The pottery silkworm chrysalis unearthed from Yangshao cultural site in Nanyang Zhuang has a history of 5400-5500 years. During the Spring and Autumn Period, the Xianyu tribe (770 BC) in Bai Di (Ji surname) established the Xianyu Kingdom with Zhengding as the center, and established its capital in the new city (now Zhengding New City Store), which lasted for 28 1 year. Xincheng is the first title of Zhengding, an ancient land. In the early Warring States period (475 BC), Xianyu people established Zhongshan State, and established Dongyuan City in the former Yuguo State, creating a splendid Zhongshan culture, which was known as the "Eight Masters of Warring States" in history. In the third year of Zhao Huiwen (296 BC), Zhongshan was destroyed by Zhao, and both Xinshi and Zhongshan belonged to Zhao. Dongyuan is the second name of Zhengding Hot Land. In the 11th year of Emperor Gaozu (196 BC), Liu Bang personally went to Dongyuan (now the ancient oriental city in the suburb of Shijiazhuang) to quell the "rebellion" of Zhao Prime Minister Chen Yi. This battle made Liu Bang realize the importance of Dongyuan's geographical location. As long as Dongyuan is stable, Zhao Yan will be stable, so he renamed Dongyuan "Calm", which means "Real Stability". It is indeed Hengshan County (later renamed Changshan County to avoid the taboo of Emperor Hanjing). During the reign of Emperor Hanjing, Changshan County was established. True determination is the third name of Zhengding City. Since then, there have been more than 20 titles in history, such as Changshan, Hengzhou, Hengshan, Zhou Zhen and Fuyang. In the Wutai Mountain Map of No.61Cave of Mogao Grottoes in Dunhuang, the map of Daozhen Mansion (now Zhengding) in Hebei Province was drawn more than 1000 years ago, and the historical features and architectural pattern of Zhengding City are vivid. In the first month of the first year of Tianxing in the Northern Wei Dynasty (AD 398), Tuoba GUI, the founding emperor of the Northern Wei Dynasty, visited Changshan County on the south bank of the Hutuo River and saw the military castle Anle Base built by former Yan general Murong Ke on the other side of the river. He immediately decided to move Changshan county to Anle base and change the original Tucheng wall into Shicheng wall. At the beginning, the Anle base, which had only a purely military role, stepped onto the historical stage from behind the scenes and became the first of the three male towns of Heshuo. Zi Zhi Tong Jian said: "The small town is called dock (north is called base, south is called dock), and the world is fighting for soldiers, so people gather to build dock for self-defense." Here, the pier in the south and the base in the north are castle-like buildings with defensive facilities. Anle Lei is the former life of Zhengding City. Zhengding City has a history of 1600 years. "Millennium Zhengding City", the Millennium is only an estimate. His atmosphere, mind and majesty have gone through many vicissitudes, but they have become more and more deep, restrained and heavy. Song Qi, the prime minister of the Northern Song Dynasty and the minister of the Ministry of Industry, defined it positively: "The world is in Hebei, and Hebei is in truth. It is also the gateway to a country with thieves. During the Yongzheng period of the Qing Dynasty, in the first year of Yongzheng (1723), due to avoiding the hermit Yin Zhen, Calm was renamed Zhengding. But the origin of the name "Zhengding" is by no means so simple. Yong Zhengdi is well versed in Buddhist scriptures, but as the son of heaven, he has two dharma names, namely "Yuanming lay man" and "Shatian lay man". He changed "true" to "positive", which really became positive definite. And "positive definite" is one of the eight right paths of Buddhism. Zhengding City, which came from ancient times, is a military town and the throat of the country. Its important position has never been ignored. From the Northern Wei Dynasty to the late Qing Dynasty, it was always the seat of counties, prefectures, roads and prefectures, and the regional center of politics, military affairs, economy and culture in northern China in various periods.