单循环和双循环公式简介：Qi and blood have two sources. One is from the innate essence, which is the innate essence at birth and is not stained by dust. But as I grow up, it has been worn away.
Qi and blood have two sources. One is from the innate essence, which is the innate essence at birth and is not stained by dust. But as I grow up, it has been worn away.
