Ask "Six Heroes in the Snow" to give points after understanding.

I'm just doing it. The following is my understanding for your reference: (No guarantee)

1. The use of scenery description makes the article not completely narrative, but more vivid. It also reflects the tenacious life of flowers and plants, despises difficulties and symbolizes the tenacious spirit of soldiers. The description of scenery in the Spring and Autumn Period shows that the temperature in the mountains changes rapidly and is very difficult, and it also reflects the indomitable spirit of soldiers.

2. Like a sail full of wind.

3. It's as difficult as climbing to heaven.

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