The first frost didn't throw Shuang Shuang underground.

When the grain is ripe, it must be ripe.

The first frost is a solar term, indicating that autumn is getting deeper and the weather is getting colder. The first frost will be accompanied by frost on the ground. The bottom line is that "when the grain is ripe, it needs to be ripened, and the grain should be stocked", indicating that it is time to harvest the farmland. When the grain is ripe, it needs to be ripened in time, and the barn will be full after harvesting. By depicting natural phenomena and farming activities, couplets vividly express the characteristics of autumn and the working state of farmers.