In order to fully restore areas where the ground was dangerously loose, he scurried around the island, visiting nearly all of the areas damaged by the 921 quake. In the course of his fieldwork he discovered the same problems almost everywhere: damaged forests and shattered, loose rock that wouldn't hold together in heavy rains.
為了正本清源，徹底整治土石鬆動的地區，他幾乎跑遍了災區各地，發現土石流地形幾乎都有類似的問題：山林破壞、岩塊鬆動，禁不起豪雨沖刷。