He, 86, has made a great contribution to the development of the nation's medical science and education over the past six decades.

He invented more than 100 operation and treatment methods and conducted operations on many patients.

His stomach operation method is considered an advanced therapy.

He also made a good job of esophageal cancer operation and exudative pleurisy treatment.

He wrote hundreds of textbooks, reference books and papers and produced tens of awardees of academic degrees or titles.

He is a winner of the Kim Il Sung Prize and a member of the Academy of Sciences.