Xiaogan City, Hubei Province is the only prefecture-level city named after filial piety (another county-level city named after filial piety is in Shanxi). Xiaogan City originated from Xiaogan County and was originally called Xiaochang County (hence the name of Xiaochang County).
According to Xiaogan government network:
"The first county in Xiaogan was named Xiaochang, and its origin was unusual. According to historical records, Liu Jun, the ancestor of the Southern Song Dynasty (reigned from 454 to 464), was the third son of Yi Long, Liu Wendi. He was named King Wuling and lived in Xiyang (now Huanggang East, Hubei). In the third year of Yuanjia (453), Liu Zhu, the eldest son of Wendi, killed his father and usurped the throne, and changed his title to Taichu. Liu Jun led a crusade to seize the throne. In order to consolidate the imperial power, Liu Jun advocated filial piety, changed the country name to Xiao Jian, and ordered people with filial piety to be rewarded, "filial piety is righteousness and obedience, and titles are top grades". Then, in the first year of Xiao Jian (454), Liu Jun set up a new county in the eastern border of Anlu and the southern border of Yun County, where filial sons came forth in large numbers and filial names spread far and wide, and named it "Xiaochang" to praise the prosperity of filial piety here and show his determination to govern the country with filial piety. At the end of the Five Dynasties Tang Dynasty, in order to avoid the taboo of his grandfather Li, Li changed Xiaochang to "Xiaogan" in the second year of Tongguang (924), which means filial piety moves the world, and this name is still in use today. The origin of this name is full of the distinctive color of Xiaogan's unique filial piety culture. Even though it was renamed "Dongfeng" county during the Cultural Revolution, it eventually returned to the cultural stereotype cast by history. "
As far as I know, there is a Xiaogan township in Deyang, Sichuan, and most Sichuanese claim that their ancestors came from "Xiaogan in Macheng". Therefore, Xiaogan enjoys the reputation of "Immigrant Holy Land" in history.
Among the twenty-four filial piety compiled by the ancients, Xiaogan accounted for three: Yong Dong, Huang Xiang and Meng Zong. Huang Xiang and Meng Zong are both real figures in the official history. Although Yong Dong is a legend, he is well-founded.
Xiaogan Jane's family moved from Xinyu, Jiangxi Province during Chenghua period of Ming Dynasty. According to the statistics of 1988, there are nearly 700 people in Xiaogan City (now divided into Xiaochang County and Xiaonan District).