《资治通鉴·唐纪·唐纪十七》
冬季十月，丁酉，唐高宗到骊山温泉，由太子监理国事；丁未，回宫。
冬，十月，丁酉，上幸骊山温汤，太子监国；丁未，还宫。
In the tenth month of winter, on the day of Dingyou, Emperor Gaozong of Tang went to Lishan Hot Spring, and the prince supervised the state affairs; on the day of Dingwei, he returned to the palace.
<s>[INST] Kindly elucidate the central themes in this passage in English: 冬，十月，丁酉，上幸骊山温汤，太子监国；丁未，还宫。 [/INST] In the tenth month of winter, on the day of Dingyou, Emperor Gaozong of Tang went to Lishan Hot Spring, and the prince supervised the state affairs; on the day of Dingwei, he returned to the palace.</s>
Kindly elucidate the central themes in this passage in English: 冬，十月，丁酉，上幸骊山温汤，太子监国；丁未，还宫。
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In the tenth month of winter, on the day of Dingyou, Emperor Gaozong of Tang went to Lishan Hot Spring, and the prince supervised the state affairs; on the day of Dingwei, he returned to the palace.
assistant