However, in the period of the Northern and Southern Courts, it became necessary to make an evidential document in order to avoid complications after death, and the term fukyo has come to mean the same thing as gizetsu.
もっとも、南北朝時代_(日本)には単なる不孝でも死後の紛糾を避けるために証拠文書などの作成が必要となり、不孝は義絶の別称となった。