气、血两字作一卦解

The Qi and the Blood, the words is explained and is to be understand in one Gua.

凡天地之数，起于一。一属阳，气也。一生二，二属阴，血也。

Anything in the universe and on the earth, starts from number one. Number one belongs to Yang. It is the Qi. Number one gives birth to number two. The number two belongs to Yin. The Yin means the blood.

一合二而成，气无形而寓于血之中是也。二合一而成，血有形而藏于气之内是也（经云"气能统血"，即此意也）。

The number one needs the birth of the number two to show its significance of presence, e.g. the Qi has no shape. It melts into the blood to be able to exist. The number two needs the number one to bear life. It means that the blood has shape. It needs to reside into the Qi to move. (this is the meaning that, in the medical bible, it is said the Qi can lead the blood.)

气、血两字，作一坎卦解之也可，即作一离卦解之也可，即作坎离二卦解之也亦可。

The Qi and the blood, can be understand in the Kan Gua. It can be understand in the Li Gua. It can also be understand in both the Li and the Kan Gua, separately.

余恒曰："以脏腑分阴阳，论其末也。以一坎卦解之，推其极也。"又曰：人身一团血肉之躯，阴也，全赖一团真气运于其中而立命，亦可作一坎卦以解之。

Dr. Yu Hen said: “to understand the Yin and the Yang in the body organ level, is to understand it at the end. To understand it in the Kan Gua, can deduce more of the meanings of the Yin and the Yang.” He said again: the whole body muscle and blood are the Yin, which depends on the True Qi to move in it to maintain the life. Such relationship can also be understood in a Kan Gua.