Doing researches on 理, I found a definition linked to TCM in a French dictionary, the Grand Ricci, with an intriguing first part: “Intimate natural structures. - Cf. 五理 wǔ lǐ.Texture of tissues (skin or internal membranes)”

I’ve been unsuccessfully looking all over for 五理. Since the RIcci is normally a reference, I’m a bit intrigued.

Has anyone ever heard about it?

Thanks a lot in advance.