Yen Yen, better known as Tsu-yu(子游), came from the kingdom of Wu during the Spring and Autumn Period of the Chou Dynasty. He was 45 years younger than Confucius, his teacher. Since he had such vast knowledge of rites and literature, he was classified by Confucius in the group of people who specialized in literature. When Tsu-yu was serving as an official in Wu(武城) of the kingdom Lu, Confucius asked him, "Was there ever a really good man in your government"? Tsu-Yu replied, "Yes, his name was Chan Tai Mieh Ming(澹臺滅明), a man of righteousness and justice. He never took a short-cut while walking. If not on business, he never stepped into my private rooms". Tsu-Yu's grave was located at the foot of Lu Mountain in Chang Sho Country of Chiangsu Province. He was the originator of the literature in the kingdom of Wu.

Reference:《THE BRIEF BIOGRAPHIES OF THE SAINTS AND SAGES ARE IN THE TA CHENG HALL OF THE CONFUCIUS TEMPLE》published by Taipei Confucius Temple Governing Board