Yu Xin (Chinese: 庾信; pinyin: Yǔ Xìn; Wade–Giles: Yü Hsin) (513-581) was a Chinese poet, politician, and writer of the Liang and Northern Zhou dynasties of medieval China. Yu Xin was one of the founders of the Xu-Yu literary style together with Xu Ling, and the author of a famous fu. His courtesy name was Zǐshān (子山), and he was known as Yu Shin in Japan.[1]