Which solar term is stronger in Shui Ze?

-Excerpted from Yi's "Zhou Shushi's Explanations". It means that after the arrival of the great cold, chickens begin to hatch chicks; Raptors, like eagles, are in a state of strong predation ability, looking for food to supplement energy to resist the cold; The ice in the water has frozen to the center of the water, hard and thick.

Excerpt from the original text: It's cold, and chickens start to nurse. On the fifth day, the stork fell ill. On the fifth day, Shui Ze's abdomen became strong. Yizhoushu, formerly known as Zhou Shu, is similar in nature to Shangshu and is a compilation of ancient historical documents in China.