[1] On June 4, 1937, the Battle of Pochonbo occurred in Kapsan County, South Hamgyong Province.

In order to gain Kim Yong-ju's cooperation, Japan handed over his grandmother.

[2][3] On August 15, 1945, her grandson Kim Il Sung returned to China from the Soviet Union.

She died on October 18, 1959, at the age of 83 and a statue in her honor stands at the Revolutionary Martyrs' Cemetery.

[5] On 19 August 2013, wreaths were sent by various North Korean organizations to the tombs of Yi Poik and Kim Pohyŏn.