C24 How did brother-in-law know about this

When the little emperor heard this, he curiously asked, "How did brother-in-law know?" Then, with an expression of sudden enlightenment, he laughed, "Did you only know after reading the case file?!"

Ye Dong almost slapped him when he heard how ignorant the little emperor was. He said snappily, "If I look at the files and find out