Was Datong the capital before?

Datong was called Yunzhong and Pingcheng in ancient times. It was once the capital of the Northern Wei Dynasty, and Liao and Jin were the capitals.

Datong was once the capital of the Northern Wei Dynasty, the largest political, economic, military and cultural center in northern China, and an international metropolis. Since then, with Beiwei Pingcheng as the center, Datong is not only the capital and capital of the Golden Triangle in northern Shanxi, southern Shanxi and western Hebei, but also an important town in the west during the Liao, Jin and Yuan Dynasties. It has been called Xijing for more than 240 years. Dai Fan was established in Datong in the Ming Dynasty, which was the first important town in Jiubian.

Accompanying capital: refers to the sub-capital outside the capital, also known as the auxiliary capital. The capital is generally called "two capitals" together with the capital, and its system is called "two capitals system" or "two capitals system and capital system".

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Today's Datong:

Datong is one of the first batch of 24 national historical and cultural cities in China, one of the first batch of 13 large cities in China, one of the nine ancient capitals in China, a national new energy demonstration city, an excellent tourist city in China, a national garden city, a national double-support model city, a national transportation hub city, a sculpture capital in China and one of the top ten sports and leisure cities in China.

Datong is the sub-central city and the second largest city in Shanxi Province. It is located in the center of Datong Basin in northern Shanxi Province, at the junction of Shanxi, Hebei and Mongolia provinces, and on the northeast edge of the Loess Plateau. It is actually the barrier of the whole Shanxi province, the gateway to the north and the throat of Shanxi, Hebei and Mongolia. It is a battleground for military strategists in past dynasties and is known as the "northern lock key".

References:

Baidu encyclopedia-Datong