Liu Yuxi’s autumn poems are as follows:
1. Since ancient times, autumn has been sad and lonely. I say that autumn is better than spring.
2. A crane lining the clouds in the clear sky brings poetry to the blue sky.
3. The light of the lake and the moon are harmonious, and there are no goggles on the surface of the pool that have not been polished.
4. My heart feels free when I see the moon in the dust, especially in the Qingqiu Fairyland.
5. I used to see the yellow chrysanthemum and say goodbye to you, but now I hear the xuan cicada and I return.
1. Autumn
1. It is one of the four seasons of "spring, summer, autumn and winter". Traditionally in China, the "beginning of autumn" of the 24 solar terms is the starting point of autumn. Entering autumn means that rainfall, humidity, etc. tend to decrease or decrease, and everything in nature begins to grow from lush growth to bleak and mature.
2. The four seasons are often divided according to the climatic average temperature of modern scholar Zhang Baokun. The indicator is that the period when the average temperature is lower than 10℃ is winter, the period above 22℃ is summer, and the period between 10 and 22℃ is Spring or autumn.
2. Phenology
1. Autumn has entered since the beginning of autumn. Entering autumn means that precipitation, humidity, etc. are at a turning point in the year, tending to decline or decrease; in nature , all things begin to grow from luxuriant growth to fruitfulness and maturity.
2. Autumn is the harvest season, and many plants mature in autumn. In the autumn season, in nature, the yin and yang qi begin to change. The yang qi gradually retreats and the yin qi gradually grows. The climate turns from hot to cool. All things grow with the cold and gradually decline. This is the season of alternating heat and coolness.
3. Temperature
1. Early autumn is still in the hot summer period, and the summer heat has not yet begun. The summer heat does not begin until the second solar term in autumn (the end of summer). The weather is still very hot during early autumn. The so-called "heat is in the three volts". According to the calculation method of "three volts", the beginning of autumn to the end of summer is often still in the "three volts" period.
2. "Dog Days" involves four solar terms: Minor Heat, Major Heat, Beginning of Autumn, and End of Summer. After the End of Summer, the heat of early autumn will end. The climate in autumn is divided into two stages. The early autumn is "sultry", and the mid-autumn period tends to be "dry" and "cool".
3. It is often after the white dew that people can feel the obvious coolness of autumn.
4. Astronomy
1. In autumn, the direct sun point gradually moves southward from the northern hemisphere. After the autumnal equinox, it crosses the equator and the sun shines directly on the southern hemisphere. From the northern hemisphere, the angle of the sun gradually becomes lower, and the difference between the length of day and night becomes smaller. During the autumnal equinox, day and night are of equal length.
2. In autumn, the distance between the earth and the sun gradually gets closer. Viewed from the ecliptic plane, the Sun is located in the background of Leo, Virgo, and Libra.