The customs of impartible inheritance and partible inheritance of land lead to emerge the nuclear family and noe-core family in different areas. 土地的不可分割继承和可分割继承导致不同地区核心家庭与非核心家庭的出现。
The reason of the transformation is that the evolvement of folktales is dominated by the culture and system of the society. That is, the Chinese system which is characterized by partible inheritance and the Japanese system which is characterized by primogeniture. 民间故事形态的演变受社会文化制度的制约和支配,故事在传播过程中产生变体的直接原因就是中日不同的家庭财产继承制度,即中国的诸子均分制和日本的长子继承制。