The ancients said: "Give a man a fish and you will have one meal; teach a man to fish and you will have a lifetime." "Give a man a fish and you will have one meal; teach a man to fish and you will have a lifetime." "Give a man a fish, and you will have three meals a day; teach a man to fish, and you will have a lifetime of benefits." "Give a man a fish, and teach him how to fish." , refers to not only giving people fish to eat, but also telling them how to fish. There is an old saying that "it is better to teach people how to fish than to teach them how to fish", which means that giving people fish to eat is not as good as teaching them how to fish. The truth is actually very simple. Fish is the purpose, fishing is the means, and one fish can solve the problem. Temporary hunger cannot relieve long-term hunger. "Fish" can only meet temporary needs, but "fishing" allows people to make a living. If you want to always have fish to eat, you must learn how to fish. Later generations often extended the idea: Teaching people knowledge is not as good as teaching people how to obtain knowledge. Teaching people existing knowledge is not as good as teaching people how to learn knowledge. The same English proverb is: It is better to give someone a shotgun than to give him bread!