Yan Cangzi had been flirting with a bastard for many years. When he was seriously injured and on the verge of death, he confessed to him, but was rejected.
Then Yan Cangzi died, so angry.
When he woke up again, Yan Cangzi found that he had gone back to the past, before his parents fell in love and he was not born.
At that time, the bastard who flirted with her was still a tender fifteen-year-old boy, so weak that he could stab him to death with one finger.