Zheng Chen and Chen Yuanguang's father and son went to Fujian to quell the rebellion.

At the beginning of the Tang Dynasty, from Quanzhou (now Fuzhou) to Chaozhou, it was still a desolate area infested by snakes. In the second year of Tang Gaozong's general chapter (669), the imperial court sent Yu Zhong, general Zuo Lang of Weiyi's government, to be the general manager of Lingnan March, led 123 partial generals and 3,6 government soldiers, and entered Fujian to quell the chaos. After Tang Jun entered Fujian, he was on a roll, with several "savage" shanzhai, but he arrived at the north side of Longxi County, and because he was outnumbered, he surrendered to Jiulong Mountain and asked for more troops. The court ordered Zheng Chen's two brothers, General Chen Min, a corps commander, and General Chen Fu, a right-handed commander, to lead 58 children named Zhongyuan to Fujian for help. At the age of 75, Zheng Chen's mother, Mrs. Wei (599-691, called Wei Dame in history, commonly known as Wei Ma, named Jing, also known as Zhen, the word Yu Jue, the daughter of Wei Qian, the secretary of the Sui Dynasty), resolutely went south with the army, and Chen Yuanguang went south with her father Zheng Chen. To Xujiang (now Jiangshan, Zhejiang), two generals, Chen Min and Chen Fu, died one after another; To Hanxing (now Pucheng, Fujian), Yuan Jian, the son of Chen Minzhi and Chen Fu, died again. Regardless of the loss of her children and grandchildren, Mrs. Wei rushed to Kowloon Mountain to join forces. Zheng Chen rallied, led the army to counterattack and advance, and the barbarians were arrogant.

Zheng Chen led his troops to build a house and settle down in Huotian (now Huotian Town) near Yunxiao River. In April (677), the second year of Yifeng, Zheng Chen died of overwork in the army at the age of 62. After the death of Zheng Chen, Chen Yuanguang, who was only 21 years old, was ordered to act as his father.

Open a Zhangzhi

Chen Yuanguang was brave and good at fighting, defeated the "barbarians" repeatedly, and led troops into Guangdong several times, which calmed the bandits in Chaozhou and Xunzhou (now Longchuan County). Through arduous efforts, both suppression and appeasement, and kindness and prestige, Chen Yuanguang led nearly 8, government soldiers, who were children of the Central Plains with the surname of 87, quelled the turmoil that had occurred frequently here since the early Tang Dynasty, and made it tend to peace and stability. In order to achieve long-term stability, Chen Yuanguang advocated "equal treatment" for local ethnic groups, granting fields, educating them, living in harmony and developing frontiers; It is argued that "its origin lies in the creation of states and counties, and its essence lies in the creation of a state order". Therefore, in the second year of the vertical arch (686), the "Please build a state and county table" was published. He said that Zhou Guan's seven Fujian provinces should be increased to eight, so please build a state spring and tide room to control the ridge table and appoint a thorn history to take care of it.

The court thinks that it is a remote place. In case the officials are not familiar with local customs, the people of Li will suffer. Chen Yuanguang and his son have been grazing for a long time, and the barbarians are afraid of it. We should make him take charge of it. On June 29th, 688, in the fourth year of hanging arch, Zhangzhou was built in Sui 'an, with Zhangpu and Huai 'en counties under its jurisdiction, and Zhangpu attached to the state as the county. Chen Yuanguang of Jin was the general of Huaihua, who was led by the corps commander You Ying Yang Wei, and concurrently served as the secretariat of Zhangzhou. Chen Yuanguang recommended a number of officials to be state and county officials, because he was a meritocratic person.

after the establishment of the county, "the territory has joined the party, and the registered permanent residence is still attached to the joint grazing". Chen Yuanguang further mobilized soldiers to settle in southern Fujian, established "Tanghuali" for barbarians, implemented regional autonomy, and "benefited" barbarians to promote national integration; Disseminate the advanced technology and culture of the Central Plains, and help the peasants and workers to develop the economy; Implementing "rule by culture" and "rule by virtue", promoting education and running schools, improving local folk customs and improving people's quality, thus realizing national unity in Fujian and Guangdong and creating a new situation of social stability, production development and people living and working in peace and contentment.

On the fifth day of November in the second year of Jing Yun, Tang Ruizong (711), the remnants of a barbarian attacked, and Chen Yuanguang rushed to defend the enemy with a light horse. However, he died in the line of duty because of the "delayed reinforcements" at the age of 55. After Chen Yuanguang's martyrdom, his descendants Chen Jun, Chen Zhang and Chen Mo successively served as Zhangzhou Priests. From the second year of the General Chapter to the fourteenth year of Yuanhe (669-819), the six generations of Chen Yuanguang family inherited the past and opened up the future for 15 years, which turned southern Fujian, including western Fujian and eastern Guangdong, into a "rich area" where the Han and barbarian people lived in harmony and lived in peace and contentment. Zhangzhou, a county, has become one of the eight famous States in Fujian, which "inspires the words of Fujian and Guangdong and opens up thousands of cultural relics."

This great cause was founded by nearly 1, soldiers and their families in Gushi, Gwangju, Henan Province, led by Zheng Chen and Chen Yuanguang. There are 87：

Bu, Ding, Wang, Fang, You, Yin, Shi, Hong, Zhu, Gan, Jiang, Ming, Wu, Li, Wu, Shen, Wang, He, Song, Qiu, Yu, Shao, Lin, Zhou, Jin, Ma, Liu, Shi, Jin.

These immigrants from the Central Plains and their descendants became the main residents in Zhangzhou, Quanzhou, Longyan and Chaoshan in eastern Guangdong, and their descendants continued to propagate and spread in Taiwan Province, Southeast Asia and overseas in the next few hundred years, making great contributions to the development of Taiwan Province and Southeast Asia and overseas society.