If Li Shaoyun could find something, He Jili could too. Even if he couldn't find anything, he only needed Li Shaoyun to help him reveal some clues. He Jili would naturally be able to find the source.
The reason why Han Qin and He Jiasi dared to kill the two illegitimate daughters was definitely not as simple as not liking them. It was more likely that they threatened the position of the mother and daughter.
When his two daughters passed away one after another, He Jili didn't think too much about it. But now, he had the heart to investigate. Sure enough, within a few days, the matter was clearly placed in front of him.
The one who died from drugs was his third daughter.