Inventory: Who Can Be Called the Emperor Through the Ages?

(Novel is not history, just read it for entertainment.) The emperor started from the Qin Dynasty, and there are countless romances in history. Who can be the emperor through the ages? Li Lei has obtained the time and space comparison system of all realms, which can edit historical events and play them in dynasties in different time and space to compare monarchs, ministers and poets. And the Emperor for shock value. There is also a gap between one emperor through the ages. Of course, one emperor through the ages alone is not enough. There is one emperor throughout the ages, and there are highs and lows, and there are highs and lows for those who have been stinking for thousands of years. (Everyone is welcome to tell us who you think is the emperor of eternity and who will be infamy for eternity.)