Back at the nightclub, Catherine ordered her people to take Ouyang Jin to a better room, which was usually reserved for important guests.
And with this arrangement by Catherine, Gu Fan was certain that tonight, it seemed Catherine was going to devour Ouyang Jin, which was quite impatient.
Gu Fan was very worried, the more impatient it seemed, the more it indicated that Catherine only planned to keep Ouyang Jin for the night, and by dawn, she probably planned to hand Ouyang Jin over as Gu Fan to claim credit.
If Organization X eventually informs Catherine that this person was not Gu Fan, but Gu Fan's companion, then Catherine might be infuriated, and Ouyang Jin would have benefitted for nothing this night.
Seeing Ouyang Jin, Organization X might also wonder why Gu Fan's companion appeared in Dark City, which could imply that Gu Fan was also in Dark City, leading them to send more forces and lock down the entire Dark City.