What does "autumn is golden" mean?

This word originated from China's "Five Elements Theory", which is divided by region: the east belongs to wood, and the east wind blows in spring, so all trees recover; West belongs to gold, Jin Kemu, autumn wind blows west wind, and thousands of trees are depressed. The "order" in the autumn season is the solar term, which means that the season is autumn. By the way, the north belongs to water, the south belongs to fire and the middle belongs to earth. Because water and fire were invisible and could not be taken in the eyes of the ancients, there was the word "thing" (such as buying things).