Lecheng is named after Wang Zijin and Xiaotai Mountain. Also known as Ji, his real name is the prince of Ji Xiexin. Because of his outspoken advice, he was abolished as Shu Ren, learned to be immortal, rode a white crane, roamed three mountains and five mountains, and played the flute like Feng Huangming sang. Legend has it that Wang Zijin played the flute on the top stone of Xiaotai Mountain, attracting a group of cranes to fly; Xiao Mu is in Xiaxi Spring in Xiaotaishan, facing the crane across the bank. "Le" refers to music, read "yuè"; "Cheng" is an ancient musical term, which refers to sports.
Xianqiao Scenic Area, at the northernmost part of Yandang Mountain today, also has the remains of Wang Zijian. "The Legacy of Dongou" records: "There are Xianting, Xianqiao, Xiandong and Difeng in the northern foot of Yanshan Mountain, Xianxi in the water, Danzao and Shi Qiping." Therefore, according to the ancient legend, it was named after Wang Zijin who played the flute on the crane. Wang once called Yueqing "the son of Jin Jiangshan". Wang said that he had done three deeds in Wenzhou, twice in Yueqing and once in Wenzhou. Two places in Yueqing refer to Xiaotaishan and Beihe Xianqiao, and one place in Wenzhou refers to Blowing Mountain in the south of Zhupu between Wenzhou and Ruian.
At the beginning of the establishment of Lecheng County, it had an indissoluble bond with music. At present, only one county-level city in Yueqing has the relationship between place names and music.
Soon after Lecheng County, natural disasters followed. In the cruel disaster year, Wenzhou even experienced the tragedy of cannibalism. In June of the seventeenth year of Taiyuan in the Eastern Jin Dynasty (392), many people were drowned in counties such as rainstorm, seawater intrusion and Lecheng. In April of the first year of Yuan Xing in the Eastern Jin Dynasty (402), there was a great famine in Yongjia, and people exchanged food with each other. During the Southern Dynasties (463-464), Yongjia and other counties suffered from drought for two consecutive years. One liter of rice sold for several hundred yuan, and 67% of the people starved to death.
In the ninth year of the Sui Dynasty (589), the Sui Dynasty was destroyed by Chen and China was reunified. In order to strengthen centralization, Emperor Wendi of Sui Dynasty implemented the measures of merging counties and counties, and reduced Yongjia to a county, including Cang, Songyang, Yongjia and Linhai as states, and administered Wenzhou, Lishui and Taizhou today, including Cang (now Lishui) as states and Yongjia as the government. Twelve years (592), the county was changed to Shuozhou.
In the fifth year of Tang Wude (622), Yongning, Angu, Lecheng and Hengyang were restored. In the seventh year of Wude (624), Yongning County was changed to Yongjia County, and Lecheng merged. In June of the second year (669), there was a hurricane and heavy rain, and the tide was high. In Yongjia and Angu counties, 6,848 houses were washed away, 9,070 people and more than 500 cows were drowned, and 4 150 hectares of Tian He was damaged. The government sent a rescue team. In the first year of Shangyuan (674), Yongjia County and Angu County belonged to Wenzhou, and Lecheng belonged to Yongjia County.
In the first year of Emperor Taizong (689), Wu Zetian analyzed Yongjia as Lecheng County.
In March of the first year of Kaiping (907), Wang Qian Liu ordered his son Qian Quankui to crusade against Wenzhou, and Lu was killed. Qian Quankui is known as the secretariat of Wenzhou. In August of the second year of Kaiping (908), Zhu Cheng, the father of the taboo ancestor Zhu Wen, and Qian Liu, the king of Wu Yue, changed his music to Yueqing. "Qing" is also an ancient musical term, which means deep as opposed to "turbid", and "Qing" means clear, graceful and high-spirited. At this point, the name of Yueqing County has been determined and has not been changed so far.