Wheat should be cut in sunny days, plowed in rainy days, and sown in time without delay. What does it mean when the three rivers are ripe and he is full and warm?

It is advisable to cut wheat and rain till it is sunny, that is to say:

Wheat should be harvested in sunny days and cultivated in rainy days.

Don't delay sowing, sow in time.

When the three are ripe, he will be warm and grateful to God.

That is to say, wheat, early rice and late rice.

When they are all cooked, you can eat and wear warm clothes. Thank God, because planting crops depends on the weather.