Background Mystery (S01E13)

S01E01 Massacred S01E02 A New Name S01E03 Return to the Capital S01E04 Becoming an Aide S01E05 Breakthrough S01E06 The Burial Trap S01E07 Narrow Escape S01E08 The Chief Aide S01E09 Rumors S01E10 The Tomb of Liu Xian S01E11 Identity Exposed S01E12 The Truth about Death S01E13 Background Mystery S01E14 Posing as Marquis Pingjin S01E15 Hungry Ghost Festival S01E16 The Other Man S01E17 Treasure of Dongxia S01E18 Resolve for Vengeance S01E19 Mastermind S01E20 Approaching Yong Rong S01E21 Investigation at the Zhao Residence S01E22 Owning up to One's Wrongdoing S01E23 A Trap to Sow Discord S01E24 Chaos at the Marquis' Residence S01E25 Doubts S01E26 Truth of the Annihilation S01E27 Prison Break S01E28 Father and Son Duel S01E29 Empress of Dongxia S01E30 The Empress and Kuai Duo S01E31 Choice S01E32 Gui Seal S01E33 The Buried Past S01E34 Mysterious Figure S01E35 The Revenge Plan S01E36 Intersecting Leads S01E37 The Third Person Appears S01E38 Execution S01E39 Escape from Prison S01E40 Last Clash