King of Great Tang: Thriving by Keeping a Low Profile

Song Jungui, a modern-day loser, takes one wrong step and transmigrates. Not only does he end up in the Great Tang, a few years before the An Lushan Rebellion, but he also lands in Yingzhou, An Lushan's base of power.

Knowing he lacks the bearing of a ruler, Song Jungui chooses to keep his head down and stay alive.

But... by keeping his head down, he somehow rises all the way to become a prince of the Great Tang.