What!
"What?" Si Ning's mouth fell, his eyes widened to the extent of giving the illusion of almost popping out of his eyes sockets. He couldn't believe that Xiu Junjie just offered to teach him the things he doesn't know but if he heard it correctly Xiu Junjie phrased it as an order. This made Si Ning narrowed his eyes as he closed his mouth, he wasn't about to admit he lacks some knowledge, not in front of his guards and servants.
But what were the things he doesn't know?