When Master Yu was young, he was a chivalrous character and was fond of martial arts. He was so strong that he could hold up a huge tea kettle full of water with one hand and twirl it around.
Scholar Kong Xueli, a descendent of the sage, Confucius, was a man of forbearance and well-versed in poetry. His good friend, a magistrate of Tiantai County in Zhejiang Province, wrote to him, inviting him to be his guest.