Tseng was invited to go to the US in the summer of 1990 for a conference on Taiwanese literature. While there, he took the opportunity to see a few parks, and was impressed. In particular, a lily pond in a park near Philadelphia left a deeply beautiful impression.
一九九○年夏天，受邀赴美參加台灣文學研究會的例行年會時，順道參觀了幾個社區公園，大受感動，尤其對費城近郊的長木公園裡的荷花池，留下美麗深刻的印象。