What truly rendered Heine speechless wasn't the fact that this guy only answered with "yes" or "no."
It was that he kept a straight face on the surface but chuckled like a pig behind the scenes.
…
Teacher Xia: "Hahaha, you guys tell me, isn't Heine scared out of his wits right now?"
Zhuo Yang: "I think it's best if you cut back on those kinds of jokes."
Director Sa: "Why? Brother Yang, I think you're becoming more and more like a political commissar. Aren't you Zhao Gang?"
Zhuo Yang: "So all the brothers are Li Yunlong, huh? Then I really have to drag you all back. Don't joke about this; it could mess with his judgment. We know what's going on, but he doesn't.
"At least you should tell him, this is just the lowest level mirror that only shakes once every ten days or half a month, and it's not talking, it's texting, so he won't be suspicious later on."