Xiao Hanzheng wanted to get the Sixth Prince and Miss Yan together, but he knew that he could not do it himself.
If he had personally sent someone to set it up, there would definitely be traces left behind. The Emperor would definitely be able to find out.
Regardless of whether he liked the Sixth Prince or not, his own son was schemed against by his officials. Even if the Emperor was an open-minded person, he would definitely feel uncomfortable.
Therefore, Xiao Hanzheng had someone tell the First Prince and the Second Prince that the Sixth Prince and Miss Yan were plotting against his sister and that the Sixth Prince wanted his fiancée to die in an accident.
These two were the people who did not want to see his sister marry the Sixth Prince the most, so they would definitely think of ways to ruin the news.