Topic on discussion of heavenly truth in ancient times in the plain questions (First article part II)

The remote ancients who had the knowledge of health care followed the canons of yin and yang, practiced physical exercises appropriately, and had temperate diets. They led regular lives, and did not work against the routine. Therefore, their body coexists with the spirits, and they could enjoy their natural ages and only died after they were a hundred.

Key Words: discussion of heavenly truth in ancient times, in the plain questions