Solar terms are the scale indicators of the influence of the sun on the earth, while the lunar calendar is the scale indicator of the influence of the moon on the earth, with one yang and one yin, known as the yin-yang combined calendar.
节气是太阳对地球的影响刻度指标，农历是月球对地球的影响刻度指标，一个阳，一个阴，称之为阴阳合历。