There is a saying that there is a gap between China and foreign countries, such as engine manufacturing, automobile industry, material industry, CNC machine tools and so on. However, it is no exaggeration to say that after World War II, new technologies such as space exploration technology, quantum technology, biotechnology, nuclear energy technology, high-speed rail, supercomputer, power transmission technology, laser technology, anti-satellite test, and some unknown high-tech technologies have emerged.
After all, the development of science and technology takes time. After all, China is relatively weak, and it is good to have such a level at present.