Although they found other butterfly valleys to photograph on that trip, the disappearance of some 2-300,000 butterflies from that valley hit him hard, and he resolved to take some active measures.
那次行程雖然找到其他蝶谷完成拍攝，但是一個曾經容納二、三十萬紫蝶的谷地無端消失，實在太令他震撼，他決定採取積極行動。