Shortly before he left, he did something that would have meant his death if he had failed--he stole a map detailing military deployments on Taiwan and handed it personally to Sun Ko after he came to the mainland.
臨走前，他還做了一件一旦失敗就成仁的事﹘﹘偷取台灣軍事機要地圖，面呈當時中國的行政院長孫科先生。