步步成凰：惊世庶小姐 (Associated Names)

A concubine’s daughter, who was mentally handicapped, inadvertently witnessed her sister’s adultery, which resulted in her miserable death. The moment she stopped breathing, a secret agent, who traveled through time from the modern society, reincarnated in her body. When she opened her eyes again, she was no longer the coward whom everyone could trample on…