《汉书·传·文三王传》
孝王很孝顺，每次听说太后病了，就吃不下饭，往往想留在长安陪侍太后。
孝王慈孝，每闻太后病，口不能食，常欲留长安侍太后。
King Xiao was very filial. Every time he heard that the empress dowager was ill, he could not eat and often wanted to stay in Chang'an to accompany her.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 孝王慈孝，每闻太后病，口不能食，常欲留长安侍太后。 [/INST] King Xiao was very filial. Every time he heard that the empress dowager was ill, he could not eat and often wanted to stay in Chang'an to accompany her.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 孝王慈孝，每闻太后病，口不能食，常欲留长安侍太后。
user
King Xiao was very filial. Every time he heard that the empress dowager was ill, he could not eat and often wanted to stay in Chang'an to accompany her.
assistant