She actively helped her husband, Kim Hyong Jik, in his revolutionary activities for turning the nationalist movement to the proletarian revolution.

At the request of Kim Il Sung, she formed an anti-Japanese women's association and awakened women of various social strata to an anti-Japanese idea.

She usually advised Kim Il Sung to be mindful of the nation's destiny rather than considering dutiful to her. She did her best in instilling patriotism in his mind and led him only to live for justice.

As part of the preparations the President was making to found the anti-Japanese people's guerrilla army, she personally made military uniforms and mobilized women to provide food.

When Kim Il Sung could not bear to leave the home in worry of his sick mother, Kang Pan Sok told him that he should leave at once with his unit for the lost country and its people.

Recalling his mother, the President in his reminiscences "With the Century", said:

"At that time I first saw as her son the stout and noble image of my mother alive with a sense of justice and radiant with ardor.

I used to renew my resolve by recalling the words my mother said to me and the last image of my mother dressed in white seeing me off."

Her noble love and devotion to Kim Il Sung served as a mental stay for him to liberate Korea from the Japanese colonial rule.