《汉书·传·叙传上》
皇上也逐渐厌倦游乐宴饮之事，重新学习经书，太后非常高兴。
上亦稍厌游宴，复修经书之业，太后甚悦。
The emperor gradually came to lose interest in fun and parties. He started to study the classics again, which made the empress dowager very happy.