WCC 10th Assembly, Republic of Korea, Busan, 7.11.2013, Peace Plenary. Dr Chang Yoon Jae is a professor of theology at Ewha Womenâs University in Seoul, Republic of Korea. A member of the Presbyterian Church in Korea, Dr Chang is a teacher, author and speaker on topics related to society, justice, faith and peace. His ecumenical service includes tenure as an officer of the Christian Conference of Asia. Joanna Lindén-Montes/WCC