I transmigrated into the Great Liang dynasty as the Seventh Prince. My imperial father thinks I'm an idiot, and the Crown Prince wants me dead every day. Why not rebel, instead of waiting to be killed?
Go ahead and fight among yourselves. I'll secretly seize power in the frontier army first, and send you food and supplies every year.
When I bring my troops to your doorstep, let's see if you dare abdicate on your own.