To pursue this goal he quit his job, moved to the suburbs of Kuishan in Taoyuan County, and began to spend 18 hours a day studying the problem. Quite apart from the difficulties of keeping his family fed, he often wasn't even sure how old his three children were and what year of school they were in.
為此，他辭去工作，搬到龜山郊區，一天十八個小時埋頭研究，家計難以兼顧不說，連三個孩子到底幾歲、讀幾年級都搞不清楚。