After Rebirth, I Returned the Eldest Prince to His Biological Mother, but He Regretted It

The day the emperor assigned the eldest prince to my name, Ning from Lanqingyuan agreed and jumped into the lake. The eldest prince's expression did not change and he continued to call my mother and concubine. It wasn't until news of promised death came that he was so frightened that his eyes turned red. Since then, he has been respectful and filial, treating me as his biological mother. But all this changed after he ascended the throne. "If you hadn't asked my father to take me away, my mother and concubine would not have committed suicide!" He punished me to go to the funeral of Yao Yao and send a copy of Buddhist scriptures to Yao Yao with blood to atone for his sins. After my mother's clan found out, they led all the ministers to speak out. He killed my whole family with a secret letter of rebellion. I was scolded and whipped by the eunuchs sent by him every day in the dark dungeon, and I couldn't even pray for death. When I opened my eyes again, I sent the eldest prince, who was calling his mother concubine warmly, back to Lanqingyuan. He panicked.