« Naturally » is a state of being appropriate, a balance and nature in space. Human art is born out of nature, and artists are also imitating nature unconsciously. According to the aesthetic principles of natural art, « Nature is an infinite sphere, and its inner quality center is located in every place, so the surrounding is not anywhere. » , Mo Deqilun, it is called Tianjun. » This means that everything in nature is a link in the « natural chain » – « moving and flowing and metabolizing each other », and they all have an equal relationship with each other , that is, the inside and outside of the space are all phenomenal centers to metaphorize the nature of nature.