Picture 1. The human body represented as a mountain. Depicted here are the ☞ Cinnabar Fields (dantian), the ☞ Three Barriers (sanguan), and the palaces of the inner deities. Source: Duren shangpin miaojing neiyi (Inner Meaning of the Wondrous Scripture of the Upper Chapters on Salvation; CT 90), 8a-b.
Picture 2. An immortal (possibly meant to be Laozi himself) represented using the technique normally applied for painting landscapes. Painting by Liang Kai (13th century).