The author is a fan of Sui and Tang hero dramas and has never stopped watching them from the first to the fifth. He likes the characters in Sui and Tang heroes very much and also likes that period of history. So I wrote a time travel article, but the writing style is not easy to criticize. The background is that several students accidentally came into contact with the black technology time machine and traveled to the era based on the TV series Heroes of the Sui and Tang Dynasties, and became all-powerful in that era.