《旧唐书·列传·卷一百一十八》
不久兼任太子侍读，每日清晨至少阳院，午时见庄恪太子。
俄兼太子侍读，每晨至少阳院，午见庄恪太子。
Soon he also became the assistant tutor to the crown prince, seeing Zhuangke Crown Prince every day at least at the Shao Yang Hall in the morning and at noon.