Nevertheless, Yen Shen-horn began in the sixth grade putting on hip waders and slogging through marshes and ponds up to a meter or two deep in search of aquatic plants to add to his collection. It was also at that time that he began writing articles urging people to attach more importance to aquatic plants.
顏聖紘卻由國小六年級開始，一面穿起涉水褲、雨鞋，踩泥巴、鑽茅草，進入一、兩公尺深的沼澤陂塘採集水生植物；一面也寫文章，呼籲人們重視水生植物。