The nail spirit is Lei Feng’s nail spirit. When Lei Feng heard some comrades say that they were so busy at work that they really had no time to study, he wrote this paragraph in his diary based on his own learning experience: "There is time to study, the question is whether we are good at it or not." Squeeze, are you willing to drill? There is no hole in a good board, but why can nails be driven in? It is forced in through pressure. From this point of view, there are two nails. Advantages: One is squeezing and the other is drilling. We should also promote this "nail" spirit in learning, being good at squeezing and drilling. "This is the "nail" spirit of Lei Feng's hard study that is widely praised.