How to Make up for the Regrets of the Han Dynasty?

Liu Bo is a modern historian with in-depth research on the history of the Han Dynasty. At the same time, he also had many regrets about the Han Dynasty. In an accident, he discovered a mysterious scroll that had the power to travel through time and space. In an experiment, the protagonist was involved in the vortex of time and space, and when he woke up, he found that he was already in the early years of the Han Dynasty. With his knowledge of history, Liu Bo managed to get close to Liu Bang. But what he didn't know was how difficult it was for a low-level person to meet the then emperor. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.