Zhang Mu, an ordinary twenty-five-year-old young man, was fascinated by the online game 'Invincible Heroes', which led to betrayal and suicide. When he opened his eyes again, he returned to two years ago , 'Hero' is just about to be tested, and he has nothing but a huge amount of 'Hero' knowledge in his head... The game is very important, and life is also very important. He will not give up the game, let alone his family, relatives and friends. This book is not Data flow is not a pure YY novel, there is no magic weapon, no luck, only the knowledge of two years of rebirth.