It is easy to think of the former, because the eagle can not only fly, but also be the king in the sky. Only it deserves to be an animal that reaches the top of the pyramid. The latter is puzzling, why it is a weak snail, not the king of the forest, the tiger cheetah and so on. Think about it carefully, in fact, it is easy to find the answer, that is, the snail's persistence. Although the snail climbs slowly, it keeps climbing, never giving up and never stopping. It was its perseverance that brought it to the top of the tower. This easily reminds us of the tortoise in the tortoise-rabbit race, knowing that its chances of winning are almost zero, but never giving up in the race. Finally, it was its persistence that brought it victory.