Do you think Cold Night is a sick sentence?

Actually! Whether the moon sets or not, we can understand it as the poet's description of the autumn night. The moon may have set here, or there is no moon at all And can you see the frost all over the sky at night and hear the crows crow? I can definitely answer that crows crow at night, but not continuously, occasionally once or twice. This is what I saw and heard when I lived in the countryside when I was a child. So, can you see the frost all over the sky at night? This is a poem, a feeling, not a vision. Even in the daytime, the frost we see is not in the sky, but on leaves, grass and ground. When the poet said it was full of frost, he described the feeling of cold nights in late autumn or early winter.