Most people called him Elder Wu, a man who worked in various libraries before joined the faculty at Chang-Jung High school and moved on to Tainan Theological College/Seminary (TTCS). He became the first lay person to be given the full professorship at TTCS.
Graduated from Kyoto University (Philosophy) and Yale University, Wu was more a thinker than a talker. He used the seminar style to conduct the classes at TTCS and pushed students to think more independently than just following the text books. Some students thought he was always serious, not knowing that he was a man with humor: