• Majored in Business Admin. in Yonsei University
• Mastered in Business Admin . in Yonsei University
• San Dong Accounting Corp.
• Seihwa Accounting Corp.
• PWC Accounting Corporation
• Advisory Committee member for Gangnamku District office.
• Advisory Committee member for KIBO
• Outside director for Heungkuklife

Write up a business plan for local cable broadcasting
Consulting on IPO, Hundai-homeshopping Business Consulting.

- Book
Business analysis of newspaper industry, Korean Press Foundation, 1999. Co-author
Secret numbers game-fraudulent accounting, Kukil Press,2003, Co-translator