Game Invasion, I Gained a Proficiency System

Chen Xia travels through the urban world and acquires the proficiency system. As long as you work hard, you will definitely gain something. He thought he would become a billionaire with the help of the system, but the game suddenly came and those who obtained the black card could become players, enter the dungeon, and gain all kinds of magical abilities. The world has undergone drastic changes and players have begun to rise. In this turbulent era, who can be the final winner? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.