Thank you why sleep before midnight, the most useless if one day ten day of cold exposure.
贵有恒何必三更眠五更起，最无益只怕一日曝十日寒。
Explain why we see more meteors from midnight to dawn than from evening to midnight.
为什么我们在午夜到黎明看到的流星要比从傍晚到午夜看到的多？
Explain why we see more meteors from midnight to dawn than from evening to midnight.
为什么我们在午夜到黎明看到的流星要比从傍晚到午夜看到的多？
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