When people are in a low position, because they have poor vision and cannot see the vast world and cannot breathe fresh air, they always want to climb up, even using their hands and feet to "climb" up without any concern for the image. However, people who have finally climbed to a high position do not want to fall down again no matter what, so they use their own strength to climb up. The lessons learned along the way are used to warn future generations, but the naive future generations always firmly believe in these lessons and unswervingly believe that those lessons are the truth. If you believe in the wrong truth, you will undoubtedly lose more precious things. This is such a story.