He couldn't let Jiang Yue do these things alone anymore.
He couldn't protect his family like he did before.
Before this, he didn't know that he was the Crown Prince. He felt that no matter how big the matter was, it would eventually pass. There may be things that Jiang Yue might not be able to solve on her own anymore. Moreover, before this, he thought that as long as he didn't become an official and stayed in this village, everyone in the family would be safe and sound. This was a way for him to protect his family. Now that he knew he was the Crown Prince and the eldest son of Emperor Hao. He started to reconsider everything he planned to do for his family. He was made the Crown Prince the moment he was born. Whether he would become the Emperor or not, it was destined. There would be danger along the way that he did not want his family to be involved in.