Why is 5 am a surprise in a day?

Sting is a fixed solar term, not every day.

Sting is the third of the 24 solar terms. When the sun reaches 345 degrees, it will cross the Gregorian calendar on March 5-6. Startled, for the beginning of Uzuki; Hair, the earthquake in the divination, everything comes from the earthquake, which is the image of hair growth. Speaking of earthquakes, the sun's spirit rises, the temperature warms up, the spring thunder suddenly moves, the rain increases, and everything is full of vitality.

In the twenty-four solar terms, the fright reflects the phenomenon that natural creatures germinate and grow under the influence of rhythm changes, and it is the reflection of ancient farming culture on natural festivals. Agricultural production is closely related to the rhythm of nature, and the shocking solar terms are of great significance in agriculture. The ancients in China attached great importance to this solar term and thought it was the beginning of spring ploughing. ?

Sting is the first thunder of spring. The so-called "spring thunder" means that when the weather gets warmer, the spring thunder begins to sound, awakening the insects that are dormant and hibernating underground.

Twelve months in a year (year), each month corresponds to a divination, and Uzuki (including thunder and vernal equinox) corresponds to a divination of thunder and sky; The divination of Dazhuang hexagrams is that the sky begins to thunder, and the thunder rings in the sky, which is very vivid. What is surprising is the beginning of Uzuki. Everything comes from underground, representing vitality.

Therefore, Uzuki (February) is also an energy production month, and a year of spring ploughing has begun. The symbolic feature of the shocking solar terms is that spring thunder suddenly moves and everything is full of vitality. Judging from the natural phenology and climate process in various parts of China, "the beginning of thunder" only coincides with the natural rhythm in some parts of southern China.