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.,Since receiving his father's education, Lin Xing has never broken a single rule, from the first day of kindergarten to graduating from university, whether it was the school's rules or the country's laws.,But even when class time had passed, there was still no one else in the classroom besides him. Not even the school bell rang.。