Qiu Yan Zhi uses Chen Ruo Yu's favor to help find the third person behind Zheng Wu's case. With the three vague clues from Qiu Yan Zhi, Chen Ruo Yu heads to Yuzhen Hall to find out the truth. Emperor Qi Yan finds out that the Purple Clothing Bureau has hidden secrets from him and tails Chen Ruo Yu for clues. (Source: cassiopeiastars at MyDramaList)