How long is Jianyang?

Ancient times:

Jianyang was a place of Shu in ancient times, and Qin belonged to Shu County.

In the Southern Song Dynasty (AD 420-479), it was called Niugebei County, and was transferred to Yizhou Shu County (the county governs Chengdu today).

In the second year of the Western Wei Dynasty (AD 555), Niugebei County was changed to Yang 'an County, and Wu Kang County (a modern town under the jurisdiction of county and county) was juxtaposed and named after Yang 'an Mountain. Wendi Renshou lived for three years (AD 603), and established Jianzhou, named after Jianchi, China (the government governs the north bank of Jiangxi, now Jane Town), and governs three counties: Yang 'an, Pingquan and Jinshui (now Huaikou, Jintang County). In the sixth year of Hongwu in Ming Taizu (1373), Jianzhou was reduced to Jianxian.

In the eighth year of the Ming Dynasty (15 13), Jianshan County was under the jurisdiction of Jianzhou.

In the fifth year of Emperor Sejong Yongzheng in the Qing Dynasty (1727), Ziyang County was returned to Zizhou.

Modern:

In the second year of the Republic of China (19 13), the state was changed to a county, and Jianyang County was named after the initials of Jianzhou and Yang 'an, belonging to the western Sichuan Road.

In 24 years (1935), it belonged to the second administrative supervision area of Sichuan Province (under the jurisdiction of the capital).

Modern:

1953, South Sichuan revoked the Commissioner's Office of Neijiang Administrative Office in Sichuan Province.

1976, 9 communes in Luodai District under the jurisdiction of Jianyang County were transferred to Chengdu. 1994, the State Council approved the establishment of county-level Jianyang City, which was managed by Neijiang City.

1998 was hosted in Ziyang area in February, and in Ziyang at the prefecture level in June 2000.