Demoted to Commoners Already, and You Still Want to Cause Trouble? I'll Strike Back!

A scheming power-play power fantasy about a cunning underdog. Zhu Jun transmigrates to the Great Yan Dynasty and becomes a demoted imperial prince living in the residence of a marquis. He originally plans to enjoy a carefree life alongside the marquis's heir, but who could have guessed that every one of his brothers wants him dead? Even after being demoted, they still won't let him live. With no other choice, he can only fight back! First, he'll build up his own army and make himself too powerful to control. He'll train troops and farm in the borderlands, stir up trouble in the capital, and campaign across the land. Whatever makes life exciting, he'll do it. I'm the sly one here, so who am I supposed to fear!