C919 Exorcism
In the eyes of those who knew about filial piety, Parents on the other side of husband and wife would have to treat them the same way as their own Parents. This was a moral ethics and was also filial piety, but other than filial piety, there was still a fundamental difference.
For example, if the one staying in Purple Thorn Garden was not Xiao Qin, but Fen Qingyun