? If a worker wants to do a good job, he must sharpen his tools first? It is a traditional famous saying from The Analects of Confucius. This means that a craftsman must sharpen his tools first if he wants to do a good job. This metaphor means that preparation is very important to do a good job. There are other traditional sayings, such as? Sharpen a knife and cut wood by mistake? And so on all express the same meaning, which shows that the ancients attached importance to preparation in advance.

In recent decades, China's social economy has made great progress, and some major projects have contributed. From high-speed rail to subway, from dam to bridge, from aerospace to Internet of Everything. All the achievements are not achieved overnight, and it takes time to temper. The promotion of these major projects and projects has also forced the development of China's manufacturing industry. Taking subway repair as an example, the first subway in China was built by manual ground excavation, which was inefficient and costly. Foreign shield machine is a sharp weapon to repair subway, but China's technology blockade has caused foreign merchants to charge exorbitant prices, but we have no room for bargaining. But in the end, we achieved a technological breakthrough, and the performance of the self-developed shield machine was not inferior to that of foreign countries, and the cost was lower.

The success of shield machine makes China's subway construction advance by leaps and bounds and become a subway power in one fell swoop. Sharp tools can do a good job. It's hard to imagine how long it would take to build a subway in China without a shield machine, and it's hard to imagine how much we would have to spend if we bought a shield machine from abroad. The country is like this, and so is the individual. When doing things, you must understand? Sharpen a knife and cut wood by mistake? Only in this way can we get twice the result with half the effort.

Now many parents let their children give up their studies and go out to work early because of poverty or other reasons. In my opinion, this is a typical ignorance? If a worker wants to do a good job, he must sharpen his tools first? The truth. This situation is more common in rural areas.

Joining the "three supports and one support" team only hopes that through their teaching career, more students will learn knowledge and understand some simple and simple life truths, thus helping them to go further and better in their future lives.