After a time of decay comes the turning point. The powerful light that has been banished returns. There is movement, but it is not brought about by force. The upper trigram K'un is characterized by devotion; thus the movement is natural, arising spontaneously. For this reason the transformation of the old becomes easy. The old is discarded and the new is introduced. Both measures accord with the time; therefore no harm results. Societies of people sharing the same views are formed. But since these groups come together in full public knowledge and are in harmony with the time, all selfish separatist tendencies are excluded, and no mistake is made. The idea of Return is based on the course of nature. The movement is cyclic, and the course completes itself. Therefore it is not necessary to hasten anything artificially. Everything comes of itself at the appointed time. This is the meaning of heaven and earth.
All movements are accomplished in six stages, and the seventh brings return. Thus the winter solstice, with which the decline of the year begins, comes in the seventh month after the summer solstice; so too sunrise comes in the seventh double hour after sunset. Therefore seven is the number of the young light, and it arises when six, the number of the great darkness, is increased by one. In this way the state of rest gives place to movement.