The Villain Traps the Time Traveler (Quick Travel)

Cai Cong is a very poor college student majoring in history. He supports himself by setting up a stall. One day, someone actually told her that she was an insect immortal who had been demoted to the mortal world and had a chance to return to the immortal class. After being happy for a moment, I was told that I needed to go to various dynasties to do the hard work. What is your mission? It turns out that each dynasty set up roadblocks for those ambitious time-travelers to prevent history from being changed. The task is difficult, but the process is joyful. As a villain, Cai Cong is a conscientious villain The story in this novel is purely fictitious. Although it borrows a little bit of historical records, it cannot be studied and it is not the truth. Please don't read it as a historical situation