The source of all things, the first level of meaning: the development and changes of anyone and things have the laws of change and development, which are endless and closely related. No one can exist independently in the world.

The second meaning is that everyone has a light in his or her heart. No matter what he or she has experienced, the light in his (her) heart will never go out. It will always be like a little sun, bursting out with light, constantly affecting people around and bringing hope.