The term refers to the interrelationship of engenderment and restriction among the five elements in which generation and restriction contain each other in order to maintain the coordination and stabilization of five elements. Inhibition and transformation among the five elements connotes the self-regulation of inter-generation combined with inter-restriction among the five elements. Inter-generation and inter-restriction are inseparable from each other. Without generation, there will be no production or growth of things. Without restriction, harmonious relationship of things cannot be maintained. Therefore, generation within restriction and restriction within generation are to exist so that balance and coordination of things can be maintained as well as stable and orderly changes and development can be promoted.