I Am a Native Dog After Rebirth

He was originally a business tycoon in the Chizha Mall in 2001. Due to an accident, he traveled 20 years later and became a high school student. After finally figuring out the situation, he discovered that the once high-ranking self was now a weakling who suffered from campus bullying. He was thin and came from a poor family. But how could he, who was out of touch with this era, get out of trouble step by step and reach the peak of his life? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.