What does it mean that "the moonlight is half deep, and the big dipper withers south"?

It means: the night is deeper, the moonlight only illuminates half of the family, and the other half is hidden in the darkness. The Big Dipper is tilted, so is Nandou.

Moonlit Night/jathyapple

Author Liu, the Tang Dynasty

The moonlight is deeper than half a house, and the big dipper is withered south.

Tonight, through the green screen window, I know that spring is warm and the sound of insects is fresh.

The night is still deeper, and the moonlight only illuminates half of the family, and the other half is hidden in the darkness. The Big Dipper is tilted, so is Nandou. I didn't know the arrival of spring until tonight. Outside the screen window reflected by leaves, the chirping insects came to the house for the first time.

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Liu was an obscure poet in the prosperous Tang Dynasty, with few poems. However, several of his short poems were beautiful, delicate, novel and meaningful, which were unique at that time.

According to Huang Furan, Liu Shan painted "Never before, pen comes first" ("Liu Mural Landscape"). The first two sentences of this poem are very artistic. Midnight is deeper, and the hazy oblique moon reflects every household. Half of the yard is immersed in moonlight, while the other half is shrouded in the shadow of night. This contrast between light and dark highlights the silence of the moonlit night and the silence of the empty court.

In the sky, the Big Dipper and the South Big Dipper are oblique. This not only further points out the "deeper" visually, but also leads the reader's vision from "others" to the vast sky, making people feel that the blue sky is also shrouded in the silence of the night, and only a crooked moon and a horizontal big dipper are silently suggesting the passage of time.

These two sentences successfully describe the silence of the moonlit night, but only show the general characteristics of the moonlit night. If the poet's pen only stays at this point, then the artistic conception and technique of this poem may not be much new. The beauty of poetry lies in the author's finding a new way to show a unique and rarely written realm in three or four sentences.

"It's warm in spring tonight, and the sound of insects is separated from the green screen window." Midnight is deeper, which is the lowest temperature in a day. However, just when the night was cold and all was silent, there was a crisp and cheerful insect sound.

The insects in early spring may be sparse and faint at first, but the poet not only noticed it sensitively, but also heard the information of spring from it. On a quiet moonlit night, the sound of insects is particularly eye-catching. It marks the germination of life and the revival of all things, so it causes a beautiful association of spring back to the earth in the hearts of sensitive poets.

Three or four sentences are naturally the corner of a moonlit night, but what it actually contains is the spring in Yamashita. This idea is novel and unconventional. Spring is a symbol of life. It is always full of colorful colors, noisy sounds and vitality of life.

If the theme is "Spring is coming", people always choose things that show vitality in the bright sunshine, but the poet abandons all the familiar signs of spring, such as Bloom's birdsong and the melting of snow and ice, and chooses the quiet and cold moonlit night as the background to write the germination and joy of life from the silence, the warmth of spring from the cold night and the unique song of rejuvenation.

This not only shows the poet's artistic originality, but also shows his keen and delicate feeling ability.