Hogwarts: Just Enrolled, Let Me Counterattack and Be Reborn

Liu Yan, the grandson of the Minister of Magic of China, a spell genius who became famous at a young age, the snake in the middle of the East, and the walking library of forbidden spells. But some people actually said that he was a Mudblood, and that he would be kicked out of school and die suddenly while sorting potions? ! Yes, that's his system. As soon as he entered Hogwarts, he was told by the system that he would be reborn and counterattack. Etc. What does it mean that by joining Slytherin, you can become proficient in all languages ​​and gain Parseltongue painlessly? What does it mean that by entering the Gringotts vault, you can obtain the lost magical alchemy? What does it mean to get a miracle by completing the crowning of magic? … Some years later. "Oh, principal, what are you doing? Put away this robe of the White Devil!" "Oh, you have really hurt me!"