1, Qin dynasty:

In 22 1 year BC, Qin Shihuang unified the six countries and implemented the county system. This city belongs to Qi County first, and then to Jiaodong County, which is the county land. "Historical Records of the First Qin Emperor" contains: In the twenty-eighth year, I began to travel to counties in the east, to the east of the Bohai Sea, crossed the Yellow River, became a poor mountain, and made a stone to praise Qin Deyan. Qin Zhi County is located in Fushan District, Yantai City, and there are no other counties in the east.

2. During the Western Han Dynasty:

The territory belongs to Donglai County, Qingzhou. It is mentioned in History of Han Geography that Gaudi established Donglai County. Shigu said that Lai Guo Zi is also a country. Donglai County is under the jurisdiction of Laizhou City today, with jurisdiction over 17 county. There are Buye County, Changyang County and Yuli County in the city. It is the beginning of the establishment of county-level administrative regions in China.

3. Eastern Han Dynasty:

At the beginning of the Eastern Han Dynasty, there were no nights and Yuli counties in the province, and the territory still belonged to Donglai County of Qingzhou. County government moved from Laizhou City to Huangchengji in Longkou City. 1986, the bronze seal of turtle button in Changguige was unearthed at the northern foot of Tashan Mountain in Weihai City, which was a relic of the Eastern Han Dynasty. Pavilion is a county-level administrative unit. It can be seen that in the Eastern Han Dynasty, this city was once the fief of Guitinghou, the magistrate of Changyang County.

4. Eastern Jin Dynasty:

Houzhao County is located in Dongmou County, which belongs to the north of this city. County governance and county governance are in Muping District, Yantai City today. The southern part of the territory is still Changguang County, namely Changyang County. Yan Qian, Qian Qin, Hou Yan and Southern Yan have remained unchanged for four generations.

5. Tang dynasty:

The territory is dengzhou city, which has jurisdiction over Wendeng County. During the Tang Dynasty, Dengzhou was abandoned several times. In the fourth year of Wude, Donglai County set up Dengzhou, and the state ruled Wendeng, which was abolished in the first year of Zhenguan.

In the first year of Ruyi, Mu Ping, Huangxian and Wendeng in Laizhou moved to Dengzhou to govern Mu Ping. Shenlong moved to Penglai in three years. In the first year of Tianbao, Dongmou County was abandoned.

In the first year of Gan Yuan, Dongmou County was changed to Dengzhou. According to the analysis of the western boundary of Wendeng County in the second year of the Tang Dynasty, Mu Ping County is located in the old town of Dongmou. For more than a thousand years in the thirteenth year of the Qing Dynasty, the southwest boundary has always belonged to Mu Ping County, and the rest belong to Wendeng County.

Baidu Encyclopedia-Weihai