Why is the Yangtze finless porpoise called "the smiling spirit in the Yangtze River"?

The Yangtze finless porpoise is called a smiling spirit. First of all, this is a metaphor that combines human aesthetic preferences. The reason why this metaphor appears is because the finless porpoise looks really cute and beautiful! We often say that the snout of finless porpoise is short and wide, while the head is round, and the whole mouth line looks like laughing. In addition, finless porpoises are friendly and aura animals. Their IQ is equivalent to that of three or four-year-old human children. They are lively, but cute and lovable, like elves.

Let's look at the smile of the finless porpoise with pictures. As shown above, this is what the finless porpoise looks like when it is quiet. Its head is round, its mouth is slightly upturned and its small eyes are round. This is what our human aesthetics looks like with a sweet smile!

When they cried happily, it was another pleasing picture. As shown above, this is the correct way to laugh.

However, if you are just good-looking, you probably won't be so liked and praised by the elves. As an animal with an IQ comparable to that of human children, the lively character of finless porpoises makes them jump out of the water to play from time to time, and sometimes they do some surprising and lovely behaviors, such as the following figure:

The little finless porpoise spits water bubbles at you. Seeing this picture, do you say that your heart is sprouting? Strange, lively and lovely, the spirit in the water, that's all. Therefore, the finless porpoise is well-deserved as a smiling elf in the Yangtze River.

What is worrying is that the Yangtze finless porpoise, which is deeply loved by people, is the biggest natural enemy of mankind at present. Human shipping and water pollution in the Yangtze River are threatening the safety of finless porpoises. The endangered degree of this population is already very high. At present, the number of finless porpoises is decreasing sharply year by year. If this situation can't be improved well, we may never see this smiling elf in the water again in the near future!

Genie's smile needs everyone's attention and efforts to help promote and practice environmental protection. Man and nature live in harmony, and keep a little more beauty for this earth!