Six levels

In Traditional Chinese medicine, the Six Levels or Six Stages is a theory that originated from Shang Han Lun (translated into "On Cold Damage") by Zhang Zhongjing in 220 CE or about 1800 years ago.

Six levels

In Traditional Chinese medicine, the Six Levels or Six Stages is a theory that originated from Shang Han Lun (translated into "On Cold Damage") by Zhang Zhongjing in 220 CE or about 1800 years ago.