In Netflix's Marco Polo, Hundred Eyes is sent to assassinate the Song chancellor Jia Sidao. He finds his target already in a duel with the new chancellor to be who is killed then a fight ensues between him and Sidao. Hundred Eyes is surprised to find Sidao a formidable opponent with his Mantis Kung Fu but he is not bested (in the finale we see Sidao also knows the Mantis moves). Guards arrive and the scene ends.
I don't get why he didn't continue with his mission.