In the second year of Yongzheng in Qing Dynasty (1724), he was the top scholar. Written by the Hanlin Academy. Tired of moving to wait for a bachelor's degree. He has served as the magistrate of Gaozhou, Zhaoqing and Shaoguan, Guangzhou. Mother went home after the funeral. He is also known as the vice president of the Unified Records Museum.

From the first year of Qianlong to the seventh year of Qianlong (1736 ~ 1742), he successively served as the minister of punishment, housing and war. In the eighth year of Qianlong, Chen Dehua concealed the secret of his brother's prisoner abuse, and the emperor asked before playing it. The Ministry took office and was demoted to assistant minister of the Ministry of War. In the twelfth year of Qianlong, he was dismissed and returned to the field because he was accused of illegally removing the military equipment of Jiangxi generals. In the fourteenth year of Qianlong, he was appointed as the left deputy to advise and enter the study. He also got a salary for persuading the princes to be lazy. In twenty-two years, Gan Long was appointed assistant minister of the Ministry of Industry, and the following year he was promoted to minister of the Ministry of Industry. Qianlong was an official for twenty-nine years. In the thirty-sixth year of Qianlong, the empress dowager celebrated her longevity and drew nine old paintings. Chen Dehua is one of the nine senior officials. Gan Long died 44 years ago at the age of 83.

Buyi people in Chen Dehua are vegetarian and very frugal. An official is as bleak as cold. Stand up and talk about ethics and etiquette. When he was a minister, a rich man died in Beijing.