What does it mean to gather the Tao of the four seasons into the Six Classics?
Seek the way of keeping in good health in the change of natural seasons and draw wisdom from the Six Classics. This sentence emphasizes the observation of the changes of the four seasons, and we must learn the way of keeping in good health; The study of the Six Classics, I Ching, Shangshu, Shijing, Book of Rites, Jing Yue and Chunqiu, should take its essence.