What does it mean that the mysterious bird has returned after a thousand years?
Millennium solar terms indicate the condensation of water vapor in the lower atmosphere, and also reflect the process of gradual temperature drop and the degree of gas cooling. As the agricultural proverb goes, "The autumn dew is divided into nights, and it is cool all night." "After the Millennium Festival, the night is cold and the day is hot." This shows that there is a great temperature difference between day and night in the Millennium.
Millennium is the first solar term in September. Dew is water droplets formed by condensation of water vapor on the ground or near-earth objects due to temperature drop. So the Millennium actually indicates that the weather is getting cold. At this time, people will obviously feel that the hot summer has passed and the cool autumn has arrived.
Because the temperature is still more than 30 degrees during the day, but it drops to more than 20 degrees at night, and the temperature difference between them is 10 degrees. Yang Qi reached its peak in the summer solstice, and these two extremes must be reversed, and Yin Qi also rose at this time.
Millennium phenomenon
Hongyan will arrive later. Red is big and goose is small. They are two different species. Hongyan is an important biomarker in the history of paleophenology observation. In the Millennium, the swan goose flew from the desert north and flew back to the winter place.
Second, wait for the mysterious bird to return. The mysterious bird is a divine bird in ancient myths and legends, and its original image is similar to that of a swallow. Spring is warm, "the mysterious bird is coming", and when it comes, it is "flying with me"; In the cool autumn, the mysterious birds came back, but when they left, they were married and had children.
A flock of birds breeds shame. "Book of Rites" says: "Those who are ashamed will be nurtured." This kind of "shame" and "shame" are both delicious food. "Xuanwu hides the shade of wood, and the Dan bird is still ashamed." Raising shame means that birds perceive cold air and store food for winter, such as treasure.