It is not surprising that when we annotate eight characters, we often encounter eight-character pure yin and eight-character pure yang.
There is no difference between the eight characters of pure yin and pure yang and the eight characters of pure yin without pure yang. That makes no difference.
Never judge the quality of a life-threatening marriage according to whether the eight characters are pure yang and pure yin.
Some ignorant fortune tellers, or fortune tellers with ulterior motives, often use the eight-character pure yang and pure yin to talk about things, alarmist, confuse the condition of the Taoist seeker with these horrible words, lead the normal prediction to useless and ethereal disasters, and help him get into the hole to achieve his goal.