Yen recalls a research visit he paid to Taipei's underground drainage system: "From filth, plastic bags, and polyfoam to bicycles and broken beds--it had it all."
顏清連回憶，有次他參觀台北下水道看到的情形：「從泥沙、塑膠袋、寶特瓶，到腳踏車、破床，什麼東西都有。