《北齐书·列传·卷四十一》
十四五岁，喜好读书，做了太监后，一有机会就向周围的人请教，每次来到文林馆，总是气喘吁吁汗流浃背，除了请教书的知识，不说别的闲话。
年十四五，便好读书。既为阍寺，伺隙便周章询请，每至文林馆，气喘汗流，问书之外，不暇他语。
At the age of fourteen or fifteen, he loved reading. After becoming a eunuch, whenever he had the opportunity, he would ask the people around him for advice. Every time he came to the Wenlin Pavilion, he would always be out of breath and sweating profusely. Apart from asking for knowledge from the books, he would not say anything else.