This theory just reflects a well-known theory of modern management, that is, the so-called barrel theory, that is to say, for example, such a barrel is composed of many boards, each of which has its own height. The theory of management is that how much water a cup can hold never depends on the highest board, but on the lowest board. Whether it is a shepherd or a barrel in life, there is always the last sheep and the shortest board, so this is the Avenue of Heaven and Earth. Why doesn't it make sense, but it depends on everyone's perception? Because only we can see clearly, what are your shortcomings and what kind of life is inefficient? It is the kind of life that is not worth the loss, that is to say, some people always look at their tallest board and always see their leader, so this person has the capital to show off. He can always say, where is my highest score in my life? You see how awesome my head sheep is, but the sheep behind me has lost a lot of weight on the hillside, and he is still looking at the head sheep smugly. When he is talking about how many points my tallest board is higher than ordinary people, then he asks, what is the last sheep in my life and where is my shortest board. Only with such great wisdom in life can we give timely help, instead of always icing on the cake. The icing on the cake is for others to see, and the timely delivery of charcoal is for yourself to see.