After Disappearing for Twenty Years, I Changed from a Legitimate Son to a Concubine!

In his previous life, he was originally the legitimate son of the prime minister's house. The prime minister spoiled his concubine and destroyed his wife. However, he was the legitimate son but his life was not as good as that of a concubine. When he was five years old, he was even designed to be killed and thrown into a mass grave. His mother even fell into the hands of a traitor and committed suicide by biting her tongue! After being reborn, he actually obtained the Academic Master System. Just by reading, you can earn points. Points can be redeemed for treasures of heaven and earth! Take advantage of the situation! He disappeared with his mother for twenty years. The legitimate son is reborn and returns after completing his studies. Unexpectedly, the prime minister actually asked his mother to remain anonymous and become a concubine, and his legitimate son became a concubine. My concubine is evil and will send you to hell. Hypocrisy? Tear off your disguise! Framed by my concubine? Throw it directly into a mass grave! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.