Taking a High School Teacher Through MC?

A female high school teacher with a teacher of Chinese, Mathematics, and English. What kind of combination is this? Just listening to it makes me sweat... Although I have traveled through time, I still miss my achievements in the real world... As the only "game expert", Xu Jiaying, a high school student who originally planned to stay behind, had to stay with her until the end, helping everyone clear the MC and try to return to the real world. But... Can we really go back?