What is beginning of winter Sanhou?

Beginning of winter III refers to the three periods after beginning of winter. According to the traditional solar terms in China, beginning of winter usually falls on1October 7th or 8th every year, 165438, which is the beginning of winter. Beginning of winter's first symptom is "earthworm knot", which means that earthworms begin to form a ball on the ground and enter hibernation. The second stage is "the bird entering the water is a clam", which means that the bird begins to enter the water to find food such as clams. The third stage is "chrysanthemum in full bloom", which means that chrysanthemums begin to bloom after winter begins. The appearance of these three periods marks the arrival of winter and the change of nature.