For a period beginning in 1989, Ryo taught at Pyongyang's Kim Chaek University of Technology.[1][2][5] Then, beginning in 1991, she served as vice chairman of North Korea's Education Committee, an equivalent to the deputy secretary of education or vice education minister in some other countries.[1][5]
Ryo Won-gu was heavily involved in diplomatic efforts between North and South Korea, especially after her sister's death, and was considered an expert on the subject of South Korean relations.[2][6][9] In 2000, she helped host South Korean President Kim Dae-jung during that year's inter-Korean summit.[6] Then, in 2002, she drew notice by visiting Seoul on Liberation Day, paying a visit to her father's grave in the city during her trip.[1][2]