Reborn as a Child Prodigy

He died suddenly in an accident and was reborn at the age of seven. In the second grade class, due to a system operation error, his heart was damaged and he was judged not to live past the age of twenty. In order to compensate, the system started an awesome journey. Well, it's not even enough for a hundred words. Why does Mao have to have a hundred words? It's so annoying, so annoying. Okay, that's enough for a hundred words. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.