Start by Cutting Firewood and Create a New World

Wang He traveled to a dynasty that had never appeared before. He wanted to rely on modern knowledge to change his destiny, but he found that there were "immortals" in this world. Mortals seek immortality. The system [Backtracking] has one and only one effect, which helps Wang He go back to one hour before his death. The young man's worries should be taken care of. Who cares about Youhan and sits there?