Feng Baxing had not been acting in the most ideal manner, thus the Crown Prince chose to punish him. He did so while making use of someone else, that ended up being Lin Mu.
But the Crown Prince had no idea that his Third brother would be too foolish for his own good and end up committing a sin that would jeopardize the entire Imperial Family if not the entire empire. It would have been a situation where even the Emperor would not hesitate in punishing the third Prince, but that was never needed.
For there were greater powers that did it for them.
'Someone of this personality would be quite good as an adviser for the Imperial Family… and me.' Crown Prince Feng Shun thought to himself, as a few ideas appeared in his mind.