Mr. Zhu donates all his money and Tang Fan is suspicious that he is too nice. They discover that the heart stealing murderer has taken Duo Er La and Tang Fan decides to pretend Pei Huai is the murderer so the real murderer won't kill Duo Er La. Tang Fan suspects Mr. Zhu's servant and tells Mr. Zhu. He ends up getting caught. (Source: jindreame at MyDramaList)