Chanho Lee's main areas of practice include advisory services on inter-Korean economic cooperation, defense industry, legislative consulting, regulatory administration, and diplomacy and security.

After passing the 30th National Higher Civil Service Examination on Government Administration, Chanho Lee held key positions at the Ministry of Unification, including director of Planning and Budget, head of Inter-Korean Exchange and Cooperation Division, and head of Inter-Korean Dialogue Management Division. He was also dispatched to the Ministry of Foreign Affairs, serving at the Embassy of the Republic of Korea in the United States and the Embassy of the Republic of Korea in Germany. With approximately 20 years of experience in the executive branch, he has extensive experience in regulatory administration and legislative administration areas. In particular, he is recognized for his broad knowledge and experience in diplomacy, security, and national defense, including the defense industry, inter-Korean economic cooperation, and international trade negotiations. He has served as an advisory committee member for central administrative organizations such as the Ministry of Unification, and the Ministry of Justice, as well as for local governments including Gyeonggi Province, Gangwon Province, and Incheon City. He has also published numerous papers on inter-Korean relations and inter-Korean economic cooperation. He graduated from Seoul University School of Law and obtained an LL.M. from Columbia Law School in the United States. He was admitted to the bar of New York, USA.