Thinking of the string of obstacles he faced in starting on a new academic path following his transfer from the Arabic studies department to the history department, and then to a doctoral program in ethnology, and the mountain climbing that ignited his passion for the Kuanmen Old Trail, Cheng shakes his head and lets loose a smile that betrays his thoughts: "I don't get it either."
而想起由阿拉伯語系轉修歷史系再到民族系博士班，登山燃起他對於古道探索的熱情，再一頭栽進學術探險的行列，一連串因緣際會的過程卻讓鄭安晞搖搖頭，露出「我也不懂」的笑容。