What do you mean, Shui Ze has a strong abdomen?

Shui Ze's belly is strong, which means:

Three stages of a bad cold: chicken milk, severe bird disease and watery abdomen. Great cold: waiting for chicken milk; Second, the symptoms of bird disease; Three times, moist and firm abdomen. In other words, in the great cold solar terms, chicks can be hatched; Falcons such as eagles are in a state of strong predation ability, hovering in the air to find food to supplement their body energy to resist the cold; In the last five days of the year, the ice in the water has frozen to the center of the water, and it is the strongest and thickest.