Zhangguan, Ni De Weiba Cang Bu Zhu Le

A war has upended the world's strict social order. The beast-woman Qing Shilun, a former high-ranking military officer, now finds herself banished to the lowest caste, given to her long-time rival Shen Xilan as a plaything. Everyone thought that Qing Shilun will be tortured and humiliated, but the game is just beginning, to see who will be the master and who will be tamed…

(Source: Bilibili, translated)