He was born at a mountain village in Jongju City, North Phyongan Province in December 1893.

Though he had a clear head, he had suffered the grief of being a stateless intellectual, adrift upon Guangdong and Hong Kong of China, Hanoi of Vietnam, etc. before Korea's liberation from Japan's colonial rule.

He returned home after the liberation of the country and could have made world-famous achievements in his research into genetics and thremmatology.

He worked out the chromosome map of silkworm for the first time and had bred various species of mulberry silkworms, wild silkworms and castor silkworms.

And he made a contribution to establishing a rational system for producing and supplying pedigree silkworms in the country.

In his lifetime, he authored many sci-tech books on silkworm anatomization, heredity, breeding and sericulture like "Culturing Tussah" and "Raising Castor Silkworm".

The sericulture of the country has been put on a higher scientific level on the basis of his achievements.

He was elected deputy to the Supreme People's Assembly and awarded the People's Prize and titles of Labor Hero, academician, professor and doctor under the care of President Kim Il Sung. And "Kye Ung Sang Selected Works" was published and Sariwon College of Agriculture renamed Kye Ung Sang Agricultural College of Kim Il Sung University.