Just Fused with Doraemon and Escaped from Hogwarts?

[HP+Doraemon+anti-routine] In order to obtain generous rewards in the main world, Qiu Chen, who has constantly traveled through various fan worlds and completed various tasks, came to the world of Hogwarts this time and played the role of a magical exchange student from China. The good news is that in this world, Qiuchen has integrated the Doraemon trading system. He only needs to consume the obtained character emotions to take out all kinds of weird props from his pocket. What about the light wheel 10086, the magic shovel, the truth brick, the reversal hoe, the high-pressure crucible... Everything. However, the bad news is that the task given to him by the system this time is [to be perfectly expelled from Hogwarts]! Qiuchen was confused... "Expelled from Hogwarts? Perfect?!" But soon, Qiu Chen smiled again... "It's hard to be a good student, but it's not easy to be a bad student!" But three years later. Dumbledore: "Let us once again warmly welcome this year's outstanding student representative - Qiu Chen! Come to the stage to speak!" Qiuchen cried... "Misunderstanding, this is all a misunderstanding!!!"