Weird Rules: the School Will Be Closed for Seven Days at the Beginning

Ye Xuan was just in class, and suddenly passed out. When he woke up, he found that he had traveled through time for some reason, and entered the world of strange rules. At the beginning, he was the second most dangerous school rule monster, second only to the zoo! But his system as a time traveler was sleeping. Fortunately, he had a good friend, who could be called his dog-headed strategist. The two of them joined forces to save the day and conquer the world of ghost stories...