Great Tang: Father and Son Swap Places, and I Become an Emperor for the Ages

(I've already completed a previous novel that averaged 20,000 paid subscriptions per chapter, so you can dive in without worry.)

He transmigrates to the Tang Dynasty as Crown Prince Li Chengqian, three months before the crown prince's rebellion breaks out.

Just as Li Chengqian is trying to figure out how to clean up the mess he's made, he wakes up one morning in the imperial bed.

Huh? Wait, have I become my father?

Oh no! My grand plan to rebel!

Meanwhile, Emperor Li Er wakes up in the Eastern Palace and slaps his thigh.

Oh no! My empire!

Li Er, a born protagonist, clearly doesn't understand the crown prince's twisted psychological journey from normal to unhinged. He decides to lead by example and show the crown prince that his predicament isn't impossible to overcome.

So while the "crown prince" hobbles around on his lame leg, working hard to improve himself, face the doubters, and topple the mountain of opposition in the ministers' hearts, the "emperor" munches on sunflower seeds and offers his full approval and encouragement.

When the crown prince finally turns his reputation around and the ministers are moved to tears, praising the emperor for raising his son so well and keeping the family in harmony, Li Er finally returns to his own body. Watching the crown prince eagerly hand back power, he suddenly realizes something is off.

How come I'm the one doing all the work, while that little brat gets all the fame and fun?

And that little brat... even plans to keep me working like this!