1978.11——1986.06, clerk of the People's Procuratorate of Southwest Guizhou;
1986.06—— 1988.05, Deputy Procurator-General of the People's Procuratorate of Southwest Guizhou;
1988.05 ——1989.10, chief procurator of the people's procuratorate of southwest Guizhou;
1989.10 ——1990.06, a staff member of the People's Procuratorate of Yunyan District, Guizhou Province;
1990.06 ——1990.11,Minister of Organization Department of Yunyan District Committee of Guizhou Province;
1990.11—1993.12, Chief of the Cadre Section of the Organization Department of Yunyan District Committee of Guizhou Province (during this period:1988.09—/kloc-0) College >);
1993.12 ——1994.03, Deputy Director of Organization Department of Yunyan District Committee of Guizhou Province;
1994.03 ——1998.12, Deputy Director of Organization Department of Yunyan District Committee of Guizhou Province, Director of District Personnel and Labor Bureau and Director of District Establishment Office;
1998.12 —— March 2003, member of the Standing Committee of Yunyan District Committee of Guizhou Province and Minister of Propaganda Department (during this period:1999.09 —— June 2002, studying "Undergraduate Correspondence" in the law major of the Party School of the Provincial Party Committee);
Since March 2003, Yun has served as the deputy head of the People's Government of Rock Region in Guizhou Province.