The description of the grass growing warbler flying is spring. Spring is a season of recovery. Grass will recover from dormancy in winter and sprout again. Orioles will fly back to the north from the South because of the warming climate. Therefore, the description of the grass is the beautiful scenery at this time
Cao changyingfei comes from Gaoding's famous poem "Cao changyingfei flies to February", so it describes the beautiful scenery of February in the lunar calendar, that is, March April in the Gregorian calendar. At this time, the winter gradually goes away, the temperature gradually rises, and the plants in the nature will start to sprout again and grow up gradually. Hibernating animals will wake up and birds will begin to migrate.
Because the climate in spring is very good, it is the main growth period of many plants. So it is recommended to sow at this time. Both crops and ornamental flowers can be planted at this time. In this way, they can sprout quickly and grow rapidly.