"In this way, within a few generations, these vassal kings will be divided into small princes due to their large number of descendants, and will no longer be able to cause any trouble."

After hearing this, Song Zelin was stunned, as if he had been enlightened.

He stared at Li Chengfeng blankly, with a storm in his heart.

This, this is such a brilliant idea!

Why didn't he think of it?

"Your Majesty is wise! This is a brilliant plan! I admire you!"

"It's just..." Li Chengfeng changed the subject, moving his gaze away from the rice paper and onto Song Zelin. "What do you think of Li Chenghao's disappearance, Zuo Xiang?"

Song Zelin frowned slightly upon hearing this. After a moment's contemplation, he slowly spoke, "Your Majesty, I have taught the eldest prince for twelve years and know his character very well."

"Oh?" Li Chengfeng looked at him with a half-smile. "Then, judging from your perspective, is this Li Chenghao a real character?"

Song Zelin smiled bitterly and shook his head: "Although the eldest prince is the crown prince, his temperament...sigh...if I say this presumptuously, the eldest prince will never achieve great things!"

"Hypocrisy, lust, lack of independent thinking, stubborn and self-righteous, he has every flaw!" Song Zelin spoke with a hint of anguish. "Over the years, I have painstakingly taught you, but with little success. Now it seems that I am truly limited in my ability and have failed the expectations of Your Majesty and the late Emperor!"

Li Chengfeng waved his hand, signaling him not to blame himself: "Left Prime Minister, you are too serious. I know what kind of person Li Chenghao is. It's just..."

He paused, his eyes deep, his tone meaningful: "What I am worried about is the Concubine Liu behind him..."

"Noble Concubine Liu..." Song Zelin's expression changed slightly. "Your Majesty is right. Noble Concubine Liu's family is considered a top-tier aristocratic family, with enormous influence and deep-rooted roots. If they insist on supporting the eldest prince..."

"I'm afraid..." Song Zelin didn't say anything else, but the worry in his tone was self-evident.

"Letting a tiger go back into the mountains will only bring endless trouble..." Li Chengfeng muttered to himself, a cold glint in his eyes. "It seems that it's time to speed up some things..."