Everything comes into being by itself; it is not created or generated by heaven, void, or tangible things. The expression “spontaneous generation” rejects the concept of a creator. People have different views about the concrete circumstances of the “spontaneous generation” of things. Some believe that things which are “spontaneously generated” are interrelated and dependent on one another, while some others assert that everything is “spontaneously generated” by itself abruptly, unconnected with others.
Void cannot create things, so the earliest things that came into being must have done so by themselves. (Pei Wei: A Discussion of Respecting Tangible Things)
Void means non-existence and naturally cannot generate tangible things. Before tangible things come into being, there cannot be any creator. Then what creates things? Obviously everything is spontaneously generated. (Guo Xiang: Annotations on Zhuangzi)