The fertility and mortality rates in this world are quite low, and the females' robust physiques meant they didn't suffer prolonged weakness. Thus, in this world, might made right.
Men with considerable strength could have multiple spouses, and so could women; it wasn't the structure of a matriarchal society.
Therefore, being kidnapped was considered a sort of commendation in a way. Of course, kidnapping wasn't the same as murder. After Zheng Yichen had laid several waves of 'robbers' flat, he learned about the differences from the intelligence gathered,
The reason was that those who kidnap others also prepare to be kidnapped themselves, for they targeted individuals who were outstanding and alone. Failure was a possibility during the abduction, but to them, failing wasn't problematic.