Wo de Gege Shi E Quan

At an elite private high school, students from wealthy families set the rules of the game; the upper echelons hold the top positions of power on campus, while An Ran, who just wants to keep a low profile, is reduced to being a scapegoat. When he is bullied by his classmates yet again, he is unexpectedly rescued by his twin brother, whom he had been separated from since childhood. The two strike a deal to swap identities: his brother, Jin Yansheng, takes An Ran’s place to brave the challenges of the elite school, while An Ran must survive in the slums under his brother’s reputation as a “ferocious dog”......

(Source: Tencent, translated)