"When did Xi'an change its name from Chang'an to Xi'an?

March, the second year of the Ming Dynasty (1369 AD).

The pattern of Xi'an was formed during the Ming Dynasty, and the name Xi'an originated from the Ming Dynasty. In March of the second year of Ming Hongwu (1369 AD), General Xu Da marched into Fengyuan Road and changed Fengyuan Road to Xi'an Prefecture.

Xi'an is the capital city with the most dynasties and influence in Chinese history. In the Records of the Grand Historian, the city is known as the "Golden City of Thousands of Miles, the Land of Heaven". Most of the attractions in Xi'an are historical monuments, and the Old City Wall, Big Wild Goose Pagoda and Bell (Drum) Tower in the city are not to be missed.

Expanded Information:

p>Reasons for not changing Xi'an back to Chang'an:

Because the name Xi'an was not changed from Chang'an, and Chang'an has always existed as a place name without interruption. The name of Chang'an began in Chang'an Township in the Qin Dynasty, and in the fifth year of Emperor Gao Di of the Han Dynasty, Chang'an County was set up in this area, and the capital city built in Chang'an County was naturally called "Chang'an City".

The name "Xi'an" did not replace "Chang'an" in history, but rather "Xi'an" and "Chang'an" have been in use since the Ming Dynasty. "Xi'an is the superior of Chang'an, and Chang'an is the inferior of Xi'an.

Still today, if you open a map, you can see that Xi'an is a prefecture-level city, while Chang'an is a county-level administrative district under Xi'an. To put it another way, Chang'an has always been a county, and Xi'an has always been an administrative unit that "manages" counties.

Baidu Encyclopedia - Xi'an

Baidu Encyclopedia - Chang'an