Last night's round was not tonight's round, which was suspected of reducing laps.

Twelve degrees a year, how many hours can it last?

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Li Jianshu: a poet in the Tang Dynasty. ② harmony: description.

③ ChanJuan: Beautiful, beautiful. 4 degrees: time, back.

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This is a poem about "chanting the moon". Yesterday's full moon is not today's full moon. I really doubt whether this round moon is still beautiful. In the twelve months of a year, the moon is round. If it is missing, it can still be round. But how much time can a person have in his life that belongs to youth? Through the alternation of nature, the poet realized the ruthlessness and brevity of time and warned people to cherish time. He used borrowed things to express his feelings.