What are the specific contents of the three stages of fright? What do you mean by three stages of fright?

Scare is divided into three stages: "When the peach blossoms first bloom; Second, wait for the sound of Cang Geng (Huang Li); Three waiting eagles turned into pigeons. " Huatong Huazi is the season when peach blossoms are in full bloom, oriole crows and swallows are flying, and most areas have entered spring ploughing. When all kinds of insects dormant and hibernating in the soil are awakened, eggs in winter will also begin to ovulate. Odor is a solar term reflecting natural phenology.