Ji Zi Huang (鸡子黄, the yolk of an egg) from ( 溫病條辨, Wenbingtiaobian)

~~~~The reason of naming this ‘Huang Lian E Jiao Tang (黄连阿胶汤) is to take the meaning of on the one hand, preventing invading of evil from the exterior to the heart with strong herbs and protecting the heart in the interior with mild herbs. The complicated change and amajing action of this formuls is on the Ji Zi Huang (鸡子黄, the yolk of an egg). Ancient person explans the action of Ji Zi Huang (鸡子黄) as like that chickens are related with Xun Mu (巽木, wind wood) and are supplied with the mother qi of the heart, the red color enterns the heart, and when one is vacuity, supplement ones mother. This metion is very reasonable but this does not explain perfectly. Generally Ji Zi Huang is the image of earth (globe) and is composed of blood, flesh, and emotion, and also has a character of neverending engendering. Therefore this is good at calming middle burner. This has the effects of Gan Cao (甘草) but is more miracle than Gan Cao (甘草).；there is empty space in the middle of this, therefore this frees to heart qi upward, reaches to kidney qi loward, and stays in the middle with influencing to both upper and lower burner, this has amasing effect as Lian Zi (莲子). This has harmonious nature which make exuberant thing not to contend and let weak thing rise. This has a scorched smell, therefore this supplements the heart, the flavor is sweet and salty, therefore this supplements the kidney.； Ji Zi Huang (鸡子黄) calms middle burner and makes the upper and lower communicate, Ji Zi Huang (鸡子黄) with E Jiao (阿胶) can prevent internal wind. It is impossible to know the principle of using of Ji Zi Huang (鸡子黄) of Zhang Zhong Jing (張仲景) without understanding of yin and yang covering each other