Bad Guy: Traveling Through Zhenguan with Li Er's Appearance

Open your eyes and travel through the first year of Zhenguan! One second he was starving in the back alleys of Chang'an, and the next second he was blocked in a restaurant by the two great masters of the Tang Dynasty - Yuan Tiangang and Li Chunfeng! They stared at my face and said that I looked exactly like the current Holy Emperor! Crazy? I, a social beast from the future, became Li Er's twin brother? The bad handsome man Yuan Tiangang even showed off his cards directly, asking me to be His Majesty's shadow, a knife hidden in the dark that can kill you at any time! Being manipulated right from the start, you can't control your life or death? You use me as a chess piece, but I want to overturn the chessboard! See how I use my knowledge from a thousand years later to stir up the Tang Dynasty and play with everyone at the palm of my hand! In this world, there is no telling who is whose shadow!