Metaphorical reasoning is to explain abstract truth with concrete things, simplify complexity, express tactfully and convincingly. There are four places in the article:
One: The courtiers who are cautious, honest, sincere and kind can help the king, but they can't lead troops to fight;
Two: Miracle, Yan Yan and other good horses travel thousands of miles every day, and it is better to be a wild cat when they catch mice at home;
Three: the general is a sword, which is famous all over the world, but it is not as good as an axe for craftsmen to work with it;
Four: You are rowing now, and you can advance and retreat freely. I am not as good as you, but you are not as good as me when lobbying those monarchs.
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