Bloody Romance Episode 12

Wan Mei and Chang An continue their husband-wife charade as security tightens around the target of their mission, indicating that there is, indeed, a spy in Guihua City and forcing the pair to come up with a clever plan to draw their target out of hiding. Chang An is taken captive when they put their plan into action, but they still manage to misdirect and disinform their enemies and even accomplish their goal thanks to Wan Mei's improved martial prowess. When their plan goes awry, Chang An's loyalty is tested, and he does not choose Wan Mei. Instead, he lets her plummet from the top floor of a tower into the dark waters below and emerge to face interrogation at the hands of the Grand Tutor. (Source: tehfey at MyDramaList)