C51 Brothers Sharp Tongue like a Sword(part Ii)

Only Prince Yu's face was still gloomy. He quietly waited for everyone's laughter to stop and then said, "It seems that I have a bad memory. But Ninth Brother, you have come back to the Lingnan to learn skills under royal father's orders, so you must have learned something today. I wonder what you have learned? "

Lee Xu looked at his father hesitantly. His face was dark and he frowned slightly