From the future to the past, a group of students embark on a difficult time journey. The author is all kinds of crazy, the characters will be completely broken by the end of the writing, and there will be all kinds of bugs, that's for sure. In fact, this is a pit that has been used to practice writing for a long time. The quality is not guaranteed. Occasionally, there will be products from when the mood is unhappy and the psychological darkness is full of negative forces. The updates are irregular, but I guarantee that I will not give up. The update order of several pits together with the old pits is basically as follows: The postmodern life of the magician → Summer Chronicle → Old pits → Anti-Mary Su Wen [under review] → Fish Lotus → Group wear by the masters [under review] This is my dark history·old pits.