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.,Lin Xing is not an ordinary superpower user, he is an honest superpower user. This is not Lin Xing's self-righteousness, but countless irrefutable objective facts.,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.。