Sensitive and inspiring scenes sprouted from careful observation of things and climate. The first two sentences of this poem are written back.

Looking at the sky, the moonlight is clear, the stars are withered, dark flow; The last two sentences are overlooking, the earth is quiet,

The night is cold, the sound of insects is new, and the information of spring is sensed. The idea is novel and unique, and the language is beautiful, delicate and wonderful.

Naturally interesting. It expresses the poet's thoughts and feelings that he is keen to taste life and is full of love for life.

The author wrote about going upstairs to see the boundless spring scenery, and he couldn't help but feel sad when he thought of the once-in-a-lifetime and changeable situation. Then I think the imperial court, like the Arctic constellation, is unshakable. Even if Tubo invades, it is difficult to change people's orthodox ideas. Finally, it reveals the ambition of imitating Zhuge Liang to assist the court, which is full of the spirit of clarifying the world. Unfortunately, Du Fu was brilliant, but he couldn't serve the imperial court at that time.

Metaphorical reasoning and analogical reasoning are used. From family affairs to state affairs.

Its genius lies in vividly proving the argument, and the metaphor in argumentative writing also has the function of concretizing abstract things and popularizing profound truth. Advise the king of qi implicitly and euphemistically.