A philosopher who knows astronomy above and geography below can be regarded as a ruler. However, there is something he can't do, that is, the ruler is short. Relatively speaking, the boatman is a rough man, which can also be said to be "inch", but he is familiar with water, kind and bold, and can save the philosopher when he encounters water danger. Isn't this the "length" of "inch"? This shows that the length of the size is not certain. Things that are short and long can also be seen everywhere. There is such a story in ancient times.
During the Three Kingdoms period, Cao Cao was the most powerful, but his ambition was to "swallow" the south of the Yangtze River. Moreover, Cao Cao had a million troops, and the soldiers were strong and well-fed, while Sun Liu's combined army had only 5, troops, and the food was not enough, which can be said to be "inch". However, Cao Cao's soldiers were all northerners and were not familiar with the environment in the south of the Yangtze River, so Sun Liu's combined army took advantage of the right time and place to repel Cao Jun, and the Three Kingdoms finally became a powerful force
In real life, we should understand the truth that "the ruler is short, and the inch is long". Although we are underage, we still have such and such problems, but I believe that as long as we have perseverance, we can get rid of these shortcomings and deficiencies. We should remember that although we are a ruler, we are also short, and we are an inch, but we are also long. This is the warning that this maxim gave me.
We should be modest and uplifting, give full play to our strengths to help others, and correct our shortcomings, so as to be a good student with all-round development in morality, intelligence, physique, aesthetics and labor.