Beginning by working a riddle a day, Hsu found himself collecting reference material from the classics, poetry, place names, the movies... and organizing it by category into reference books.
為了猜謎，他搜集四書、五經、詩詞等謎材，又把世界各國國名、地名、各國政要名字、有名的電影… …，分門別類製表，當作「工具書」。