Cheng had not expected that kind of reaction. He laughed, surprise and delight on his face as he rushed to help contain the mess. "Oh, stop. Don't act like you have no idea what oil is for." He paused, squinting a bit at the other. "Unless Wuxian has been remiss in his duties to educate?"

That squint brightened as if he was excited to embarrass the other further. "If he is neglectful, never fear, I will help fill in the gaps."