I read the story about 40 years ago. At that time I thought, "I am going to learn how to divine. This is fascinating. I will also learn how to be humble, especially when people praise my achievement."
10 years later I read the same story and I thought, "Famous diviners are just human. They are not right all the time."
Another 10 years later, I thought, "Li Chun Feng was really clever (cunning). He made sure that one of them was right and the emperor would be satisfied. He was sure to make it a win-win situation."
Today I have doubts about the story. It could have been made up altogether. The story can be used in different ways to suit different situations. If the intention is good, why bother?