The whole world is actually nature. From this point of view, everything living in the world is also a part of nature and is governed by its laws of evolution and evolution. In accordance with the law that what is above is similar to what is below and what is below is similar to what is above, nature also contains universal laws. Therefore, it is also a micro example of the universe. Therefore, grasping the essence of nature means grasping the universe in the first place, and from there, knowing ourselves. Because we are biologically an element of nature and mentally and spiritually a part of it.