Which sycamore tree announces autumn?

Indus announces autumn, which is quite crucial.

In ancient times, buttonwood trees were planted in the palace. When autumn begins, the leaves of buttonwood trees will fall. People know that it is autumn, and it is very wise for the ancients to observe the weather through natural phenomena. Now, the leaves will wither and fall in autumn, so quite critical idioms are produced.

The explanation is as follows:

One leaf of the phoenix tree reports autumn, and the word rice field harvests. Although it is not midsummer, it is even more chilling. Autumn leaves, raindrops, phoenix trees, all kinds of crops are growing vigorously in the autumn season, and farmers are discussing how this year's harvest will be. It's early autumn, and the weather is not cool yet. As in summer, cicadas can still be heard. The hotter the weather, the louder the sound.

As follows:

The author comprehensively analyzes the changes of weather and environment in early autumn. Beginning of autumn is the thirteenth solar term in the twenty-four solar terms of the lunar calendar, and autumn means that summer is cool. Beginning of autumn is the first solar term in autumn, which marks the official start of autumn. When we arrived in early autumn, the phoenix tree began to shed its leaves, so there was a poem "A phoenix tree shed its leaves for an autumn".

This poem describes the scene of autumn, and the fall of leaves announces the arrival of autumn, and the rice fields with bumper harvest are filled with the joy of bumper harvest. Although the weather is not cool yet, you can already feel the breath of autumn, and the endless cicadas reinforce this feeling. The whole poem expresses the author's celebration of autumn harvest and appreciation of nature.

Details are as follows:

A seven-character quatrain written by Heshui Zuo describes the first 13 solar term in the twenty-four solar terms of the lunar calendar. The poem uses realistic techniques, just four sentences and 28 words, describing the scene of the early fall of phoenix leaves in autumn; Farmers walk along the path in the rice fields. They like to comment on the rice with a promising harvest.

It means that although beginning of autumn has arrived, there are still "autumn tigers" in the climate and cicadas singing in the trees. After the work was published, it was also cited by articles on websites such as China. This custom has also spread to later generations, so there is a saying that the phoenix tree reports autumn.