On the second floor of the library, next to the platform, guardrail and oil drum, behind the bookshelf. The bookshelf is next to the platform, guardrail and oil drum on the second floor of the library. Breaking the bookcase and entering the gate can save people trapped in the bookcase, but it should be noted that gunfire will attract many zombies. "After Tomorrow" is a mobile game for human beings to survive in the wasteland world. The game provides a variety of PVE and PVP games with different rules, providing players with the richest survival experience. The main idea of the game is to guide players to help each other in the wasteland and overcome the harsh living environment.