In 1993, he returned to his alma mater, Chingnien High School, to teach photography. At the same time, he continued to search for information about frogs. He discovered that although people had done in-depth research into some species in Taiwan, there was not a lot of information about the overall distribution, numbers, and habitats of frogs in general.
民國八十一年他回到母校青年高中教攝影，不久開始找尋青蛙的相關資料，發現台灣少數幾種青蛙雖有人深入研究，但整體青蛙的分佈、數量與生活形態的資料並不豐富。