In the World of High Martial Arts, After Escaping into Buddhism, I Am Invincible

The troubled prince was brought home many years later. At first, his family favored their adopted son and used the excuse of training to harshly abuse him. The protagonist kept trying to please and tolerate him for the sake of family affection. When the last straw broke the camel's back, the protagonist left the so-called home in despair. After escaping into the empty gate, he obtained the final resource of the system to become invincible. Boy, we were wrong, you go home. Sorry donor, I don't know you.