If a worker wants to do a good job, he must sharpen his tools first. This is the thought of materialism. Its implication is to tell people that in order to achieve final success, he must have certain objective conditions, and at the same time, he must make plans and arrangements first, so that things can be done steadily. In fact, if a worker wants to do a good job, he must sharpen his tools first, or sharpen his knife without cutting wood by mistake, which highlights the role of objective conditions. If he wants to do well, he must be fully prepared, which also reflects an efficiency problem. The efficiency after full preparation is different from that without preparation. Sometimes, grinding his tools first can often get twice the result with half the effort. This sentence has a far-reaching impact on later generations, which has been passed down to this day, mainly in daily work and life. For example, both Party A and Party B are programmers. Party A's computer is a high-end computer, and its response speed is twice as fast as that of Party B. Under the same intensity, Party A's work efficiency is much higher than that of Party B. This is a truth. If a worker wants to do a good job, he must sharpen his tools first.