Some people point out that 50 or 60 years ago, when as many as five generations might live together under one roof, additions to existing residences were often needed. If the geomancy, or fengshui, for an addition was unpropitious and the family could not bear parting with the ancestral abode, they had to think of a way of taking it along.
一種說法是五、六十年前，台灣地區農村多大家庭，五代同堂處處可見；人多房屋不敷使用，只好增建。增建往往涉及風水問題，加上捨不得老房子，當地居民才研究出遷移房屋的方法。