To discuss the essence of six meridians, the key point is the comprehension of three Yin and three Yang.

讨论六经实质，关键在于对“三阴三阳”的理解。

youdao

To discuss the essence of six meridians, the key point is the comprehension of three Yin and three Yang.

讨论六经实质，关键在于对“三阴三阳”的理解。

youdao