From 1947 on through the 1950s, Wu acted as something of a literary knight errant. Disregarding the danger in which he was placing himself, he produced works such as Taiwan before the Dawn and The Potsdam Director that gave voice to the thoughts of the Taiwanese people under the White Terror.
一九四七年到五○年，他不顧生死寫了《黎明前的台灣》、《波次坦科長》等作品，為恐怖血腥年代留下台灣人的心聲，可謂亂世文俠。