Infinite Backtracking, Nuclear Explosion Blockade Zone

In 12 hours, Area 022 will be bombed. It was the first time in his life that he encountered such a major crisis. But his relatives and girlfriends are all there. Fortunately, Si Si got 4 tickets to evacuate here through the underground train, although he didn't even know why the top management gave him these tickets. There is not much time left, he must quickly enter the D area where there are many gangs, and the brutal C area. He must try his best to cooperate with his friends and lead people to escape from here. While escaping, an idea came to his mind. "Is this the first time?"