Rumors About the Immortal Song Dynasty

Protagonist: Man is in the heavens and has just traveled through time. There are too many acquaintances in the circle, so I am hiding. Regarding time travel, I can only say that I understand everything. If you don't understand, I won't explain it too much. Don't ask me how I time travel. The interests are too involved. Talking about it is not good for you or me. Just treat it as if you don't know. All I can say is that the water inside is very deep and involves a lot. It is difficult for you to know how to travel specifically. The Internet has been deleted, and those who know how to travel have already made profits.