When was Chang 'an renamed Xi 'an in ancient times?

Xi 'an, referred to as "Gao", was called Chang 'an and Haojing in ancient times. It is a prefecture-level city, provincial capital city, sub-provincial city, mega-city and Guanzhong Plain urban agglomeration under the jurisdiction of Shaanxi Province, and it is an important central city in western China determined by the State Council.

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

In the third year of Hongwu (1370), Zhu Yuanzhang made his second son Zhu Shang the king of Qin. In the same year, Qin Gong was built in the northeast corner of Anfu City. The palace in the Qin dynasty was called "the imperial city" and later renamed "the imperial city". Ming Hongwu seven to eleven years, the new wall. In the 13th year of Hongwu (1380) and 17th year of Hongwu (1384), the Drum Tower and Bell Tower were built respectively, and their positions were no different from those of Shijing Building and Bell Tower in Yuan Dynasty.

In the 24th year of Hongwu (139 1), Zhu Biaoxi proposed to move the capital to an, but died after returning to Beijing.