“Ten Ox-Herding Pictures”
The ten oxherding pictures describe the Zen training path to enlightenment, Folk images are accompanied by poems and commentaries. They depict a young oxherder whose quest leads him to tame, train, and transform his heart and mind, a process that is represented by subduing the ox. Even though these images are presented in a sequence, Martine Batchelor cautions us against thinking that self-development and Zen practice go in a straight line; It is more like a spiral, and we go back to different stages but with more understanding. You can see these pictures adorning the walls of Zen temples in China, Korea, and Japan.
SOURCE: https://tricycle.org/magazine/ten-oxherding-pictures/
The ten ox-herding pictures and commentaries presented here depict the stages of practice leading to the enlightenment at which Zen (Chan) Buddhism aims. They dramatize the fact that enlightenment reveals the true self, showing it to be the ordinary self doing ordinary things in the most extraordinary way.
SOURCE: http://www.columbia.edu/cu/weai/exeas/resources/pdf/oxherding.pdf