Tester of Beijing Youth Daily and Auto Times, engaged in trial run for six years. Jianhua Automobile Studio was established in Beijing in 2000, and served as a technical guest for one year in Beijing Radio Traffic Station. In 2004, BTV-9 car space producer of Beijing TV Station, technical guest of Voice of the City of China People's Broadcasting Station in the same year, and host of Voice of the City Traffic Beijing of China People's Broadcasting Station in 2005. Deputy Secretary-General of Beijing Love Car Committee, in 2002, designed and modified two 3G mobile communication experimental vehicles for China Datang Telecom Company, a mobile communication experimental vehicle for German Siemens China Company, a 3G mobile communication vehicle for Jiangxi Telecom, Chengdu Telecom and Chongqing Telecom in 2003, and a China military prototype vehicle in cooperation with the Automotive Department of Tsinghua University in the same year. Since the opening of Jianhua Automobile Modification Studio for five years, in 2005, the Automobile Brand Center of the Ministry of Commerce of China awarded Chen Jianhua the certificate of automobile modification trainer, while the Trade Association of the Ministry of Commerce of the United States awarded Chen Jianhua the certificate of international automobile modification trainer. At present, Chen Jianhua is a part-time brand center in the Ministry of Commerce, and a teacher in the training class of automobile refitters in China.

During the six-year test run, Chen Jianhua has accumulated a wealth of automobile knowledge, a deep understanding of past lives in automobile design at home and abroad, a distinct personality awareness of automobiles, and his unique insights have won the trust of many car owners.

At present, he is the senior editor and program host of China People's Broadcasting Station's City Voice car modification program; Beiqing Daily Automobile Times Tester; Successfully operated a car modification studio.