Verse expressing the frosty season is as follows:

1. After the frosty season of thirty years, there is a leafy autumn. This poem depicts the scene after frostfall and expresses the characteristics of the frosty season. Frost is the last festival of autumn, marking the end of autumn and the beginning of winter.

2. The wind rolls in the cold clouds and the snow flies in the twilight, and the near peaks are low in the slanting sun and the distant mountains. This poem depicts the natural scenery of the frosty season. The poet depicts the cold, dry and quiet of the frosty season through the images of the wind and cold clouds, the twilight snow, the slanting sun on the near peaks and the low mountains in the distance.

3. The mountains have bones in the deep fall, and the water has no trace of frost. This poem expresses the weather characteristics of the frosty season. The poet expresses the profoundness of the autumn and the depression of the mountains and forests through the image of deep mountains with bones in the autumn; and the dryness and coldness of the frosty season through the expression of frosty water without traces. This poem summarizes the weather characteristics of the frosty season in simple and clear language.

4. The frosty moon is bright and cold for thousands of miles, and visitors on the wild paths are clothed in single garments. This poem depicts the night scene of the frosty season. The poet shows the coldness and bleakness of the frosty season through the depiction of the frosty moon, thousands of miles of cold, and the single clothes of the travelers on the wild paths.

5, frosty water marks closed, light blue colorless. This poem depicts the scene of the lake during the frosty season. The poet shows the changes and characteristics of the lake in the frosty season through the image descriptions of the water traces closing in the frost and the pale blue colorlessness.

The physical characteristics of frostfall:

1. Frostfall means a significant drop in temperature, especially at night and in the morning. Due to the lowering of temperature, water vapor condenses into frost on the ground and on the surface of plants, which is the origin of the naming of the festival of Frostfall. After the frost, freezing conditions may occur as the temperature drops further.

2. Another physical feature of the frost season is the change of plants. As temperatures drop, plant growth gradually slows down and enters a dormant period. Many plants will drop their leaves at frost time in preparation for winter. At the same time, some plants will accumulate nutrients in preparation for the coming year's growth. In addition, flower buds of some plants will form during this period in preparation for the coming year's blooms.

3. Frost season is also a time when animals begin to prepare for hibernation. Some animals will start looking for food after the frost to reserve energy for hibernation. Others will go straight into hibernation and wait for the arrival of spring.

4. In addition to the changes in the natural environment, the weather changes during the frosty season are also obvious. At this time, the amount of clouds in the sky gradually decreases, and the duration of sunlight gradually becomes shorter. In addition, the temperature varies greatly during the frosty season, and there is a large temperature difference between daytime and nighttime.