Before graduating from university in 2023, Lin Xing had experienced this kind of time travel three times. Judging from these limited three experiences, he believed that the length of time he traveled back to the past should be related to the size of the danger.,Just as the classroom was in turmoil, a squad of men in combat gear and armed with firearms were running quickly toward the classroom from outside the teaching building not far away.,The middle-aged man, known as Wei's team, angrily shouted: "What are you doing! Didn't you say you were going to evacuate the school How did this person get in"。