My name is Chang an, what is Chang an Chang an Profile

In ancient times, Changqing Jian'an is now called Xi'an.

Chang'an is the ancient name of Xi'an, the first capital city called "Beijing" in history, and it is also a typical representative of the separation of cities and squares in China. King Wen of Zhou set the capital here, built Fengjing, after King Wu ascended the throne, and then built the pickaxe Beijing, collectively called Fenghao, Xi'an referred to as "pickaxe" is derived from this.

Han Gaozu five place Chang'an County, on the south bank of the Wei River, the north side of Afang Palace, Qin Xingle Palace on the basis of the construction of Changle Palace, Gaozu seven years to build Weiyang Palace, the same year the national capital moved from Liyang here. Because it is located in Chang'an Township, it is named Chang'an City, which means "long-term peace and stability", and is known as the world's four ancient capitals together with Rome, Cairo and Athens, and is the most prestigious world-famous capital in the history of Chinese civilization and oriental civilization.

The geography of Xi'an

Since the late Tertiary period about 3 million years ago, the neotectonic movement of the Qinling trough fold belt south of the large fault has been extremely active, and the mountain has risen sharply in the north and south, creating the Qinling Mountains.

At the same time, the Weihe River fault, which belongs to the North China Platform north of the Great Fault, continued to subside, forming the Weihe Plain under the combined action of aeolian loess cover and Weihe alluvium. The boundary between the Qinling Mountains with the steep and steep peaks and the Kuanzheng Xiaowei River Plain with the open stretch and flat and fertile fields is clearly distinguished, constituting the main body of Xi'an's landform. The main ridge of the Qinling Mountains is 2,000 meters above sea level and 2,800 meters above sea level, of which the peak of Taibai Mountain at the southwest end is 3,867 meters above sea level, which is the highest peak in the middle of the continent.

The above content reference: Encyclopedia - Xi'an.

In the early years of the Western Han Dynasty, Liu Bangding was the capital of Guanzhong, and in the 5th year of Gaozu of the Western Han Dynasty (202 years ago), he placed Chang'an County and built a new city in the territory of Chang'an County, named "Chang'an City", which means "long-term peace and stability", and changed the area where Chang'an City is located to "Jingzhao", which means "the land of Gyeonggi". During the Tang Dynasty, Chang'an County and Daxing County were redivided by the central axis, and renamed "Daxing County"."For Wannian County, it means "Wannian Chang'an" and restores the name of "Chang'an".

Chang'an, the ancient name of Xi'an, is the first capital city called "Beijing" in history, and the first city in the true sense of the word. King Wen of Zhou set the capital here, built Fengjing, King Wu ascended the throne and then built Haojing, collectively called Fenghao, Xi'an abbreviated as "pickaxe" (hào) is derived from this. Han Gaozu five years (202 years ago) placed Chang'an County, the early Han Dynasty in the south bank of the Wei River, the north side of the Afang Palace, the Qin Xingle Palace on the basis of the construction of Changle Palace, Gaozu seven years to build Weiyang Palace, in the same year the national capital moved here from Liyang, because it is located in Chang'an Township, so it is called Chang'an City.

Qin Shi Huang's younger brother Cheng Chan was once named Chang'an Jun. In the fifth year of the founding of the capital of Liu Bang, the ancestor of the Han Dynasty (202 B.C.), he named Chang'an, from which Chang'an got its name. After Chang'an County was set up in the fifth year of Han Gaozu, due to the different systems of the previous dynasties, the name and boundary of Chang'an changed repeatedly.

I don't know. Long, peace.

1. Chang'an is the ancient name of Xi'an, the first capital city called "Beijing" in history, and the first city in the real sense of history. King Wen of Zhou set the capital here, built imitation Liang Fengjing, King Wu ascended the throne and then built Hojing, collectively called Feng Ho, Xi'an abbreviated as "Ho" (hào) is derived from this. In the seventh year of Gaozu (200 years ago or ride) the shirt Dana built Weiyang Palace, in the same year the national capital moved here from Liyang, because it is located in Chang'an Township, so it is called Chang'an City, which means "long-term peace and stability".

2. Chang'an is the eastern starting point of the Silk Road and the starting point of the Sui-Tang Grand Canal, and is the only Chinese city that has been identified as a world historic city by UNESCO so far, and is known as the world's four ancient civilizations along with Athens, Rome and Cairo. Emperor Gao of the Han Dynasty in five years (202 B.C.) set the county, seven years, the capital here. Since then, the Western Han Dynasty, the New Dynasty, the Eastern Han Dynasty (the beginning of Emperor Xian), the Western Jin Dynasty (Emperor Jin Dynasty), the former Zhao, the former Qin, the Later Qin, the Western Wei, the Northern Zhou, the Sui, and the Tang Dynasty have all been all capitalized here, and the Eastern Han Dynasty, the Three Kingdoms, the Wei Dynasty, and the Five Dynasties and the Tang Dynasty have all taken this as their accompanying capital.

At the end of the Western Han Dynasty, the green forest, red eyebrows, and the peasant rebel army led by Huangchao at the end of the Tang Dynasty also built the capital here.