There is a fish in the northern sea named Kun. Kun big, I do not know its thousands of miles also. People are like the big fish. The big fish in the small pond doesn't know how big the world is, how big the world is, how small it is until it swims out to sea. All things are like water, and north Styx is the legendary sunless sea at the northernmost point of the world. The artist uses different levels of blue to depict the emerging and overlapping of the north sea, as well as the unknown life, breathing and heartbeat hidden behind the water. The author hopes to explore the relationship between living individuals and living space and the rhythm of breathing of living bodies through kun in northern Destiny, so as to arouse human's consciousness of protecting the unknown space of nature and living groups.