C70 The Exchange of Electricity!

The creation of meridians relied on sheer skill, and the cost of such an endeavor was steep.

The technique for forming the Yin and Yang meridians involved separating a portion of the existing meridians, thinning them out, and then using materials to cultivate them until they became as dense and substantial as the body's natural meridians.

Yet, since the inception of the Yin and Yang meridians