When a woman is ovulating, her cervical mucus secretion is very vigorous due to the development of high estrogen in women, and the phenomenon of increased leucorrhea occurs. At this time, the leucorrhea is the thinnest, and is colorless, odorless, and can be stretched. Moreover, ovulation begins about 24 hours after the leucorrhea is stretched, and many women use this as a basis for ovulation, which is very scientifically based. After the adjustment, the woman’s leucorrhea becomes sticky and thick in texture, when it is white and the amount of leucorrhea is significantly decreasing. The day when the leukorrhea is at its most abundant and thin, with the strongest pull, is the day of ovulation.