Literature Reference: 'You Tong' is from the 'Book of Songs·Xiao Ya·Lu Ming': 'I have honored guests, playing the zither and blowing the sheng. Blowing the sheng and beating the drum, presenting the basket offerings. When people love me, they show me the right path. I have fine wine to entertain and delight the hearts of my guests. I have honored guests, whose virtuous words are very clear. They set an example for the people, and the gentlemen follow and emulate them. I have honored guests, playing the zither and the qin. Playing the zither and the qin, the harmony and joy are profound. I have fine wine to entertain and delight the hearts of my guests.'