It has to be an illusion. An imagination.

Su Yang felt himself nearing the brink. Tapping his arms, he tried to ask him to leave him but it was as if all his gestures were ignored. It seemed like the man was simply ready to try his limits or even cross them. 

"What? I thought you liked playing the guessing game and would be interested in playing more with me. Aishh now I am disappointed." Lu Xifu tsked without batting an eye at his condition which seemed to be getting dire with every passing second. "Anyway, the game must go on. If you are not going to guess then I will reveal my intentions for coming after you. 

Su Yang's eyes watered and slowly and gradually, Lu Xifu's expression grew grim. His nonchalance vanished and what remained behind was a clear threat that seemed more like a promise.