Used before the Western Zhou Dynasty, there is no written record. During the Spring and Autumn Period and the Warring States Period, the land was thin. Qin is the capital of Yuyang. Lu County was established in the Western Han Dynasty, and Sanhe was the land of Lu County in Danyang County, Shaanxi Province. Wang Mang usurped the throne and changed Lu County into a thoroughfare. In the Eastern Han Dynasty, "Tianjunmen" was changed to "Weijun", and the three rivers were included in it. The Three Kingdoms belong to Wei.
In the Western Jin Dynasty, Yangguang County in Yanzhou was Wei County. Sixteen countries in the Eastern Jin Dynasty successively belonged to Tian County, Yuyang County, a mountain country in the Northern Wei Dynasty.
During the Northern and Southern Dynasties, it was originally a brave place facing north. After Zhou Wei was divided into two parts, East and West, in the third year of Yong Hei in O34, Yuyang County was called Wei County in the east. After 550 AD, it became the capital of Yuyang in the Northern Qi Dynasty. In time, Gateball County is located in wei county. In the second year of Tang Wude (6 19), Xuanzhou was established in the state, and Lingou County was established in the east of Weixian County in Xuanzhou (named after the county governing the dog river). In the first year of Zhenguan (627), Xuanzhou was abolished, merged with Youzhou, removed from detention and returned to Weixian. In the fourth year of Kaiyuan (7 16), a reanalysis was made on Dongwusanhe County, Yizhou County, Youzhou. In the 18th year of Kaiyuan (730), it was transferred to Ganzhou. At the beginning of the Five Dynasties and Ten Kingdoms, Sanjiang was the back beam. In the first year of Gan, O 1 1), Liu Shouguang was later called Yan Di, and Jizhou was pulled out between the three rivers. After the first year of Tongguang (023), Li Cunqian destroyed the back beam, won and proclaimed himself emperor. Three rivers moved to Ganzhou in the later Tang Dynasty. At the end of Jin Dynasty, in the first year of Tianfu (O36), please invite Qidan, Fuyun Ten State Roads, Sanjiang with Qidan, and Shangwujun with Qianzhou. In the first year of Jiang Kaitai (O0 12), the Three Rivers were in front of Daoshan House in Nanjing. Later, it was changed to Shandu House as the law analysis house, and Sanjiang was still in Jizhou. Qin is the capital of Yuyang. In the fourth year of Yihe (1 122), in December of the lunar calendar, Nanjing (now Beijing) in Liaoning was conquered, and the three rivers were returned to the gold. In the fifth year of Yihe, the gold belonged to Yanjing (Liaoning Nanjing, now Beijing) and the three rivers to Song. Appropriate and seven years, back to the golden land. In the third year of Jintiande (1 15 1), Lu Sheng County was Tongzhou, and Sanhe was under it. In the first year of Jin Zhenyuan (1 153), Jin changed Yanjing to Zhongdu Road, with Daxing House, and the Three Rivers used Daxing House Tongzhou. In the tenth year of Yuan Taizu (12 15), Kezhongdu (now Beijing) was in May of the lunar calendar, and Sanjiang returned to Yuan territory. The first year (1260) of shizu Zhongtong belonged to Zhongshu province. In the 21st year of the Yuan Dynasty, Dadu Road was established as the general political department, and Sanhe used appropriate measures to save Tongzhou, Dadu Road. In the first year of Hongwu in the Ming Dynasty (1368), in August of the lunar calendar, Dadu Road was changed to Beiping House, and Shandong Province was established in October. In March of two years, it was changed to Beiping. In ten years, Pinggu people lived in Sanhe, and in thirteen years, Pinggu was still established. In the first month of Yongle (1403), Beiping was promoted to Beijing and changed to Shuntianfu. /kloc-in the first month of 0/9, Zhu Xie, the founder of Ming Dynasty, moved to Beijing and changed Beijing into the capital, all of which belonged to Tongzhou, the ancient capital of Beijing. In the Qing dynasty, Sanhe belonged to Tongzhou, Shuntianfu, Zhili, and was connected with the tunnel. In the fourth year of Yongzheng (1726), a river service was set up in Yong Dao, and the counties of Tongzhou and Sanhe were changed to Zhuchang Road. 12 years, I returned to the tunnel.