Money can't be measured by several teachers at all. At that time, Americans said that Qian Xuesen was worth five divisions of the Marine Corps. Take Marine 1 Division as an example, its establishment is about 2w, and five divisions are100000. The total number of active and reserve personnel of the US Marine Corps is about 30w, including a considerable number of non-combatants.

What did Qian Xuesen bring to China? Rocket, the key technology for long-range delivery of nuclear weapons, has also helped China develop its space industry. It seems that the aircraft engine money is also involved. These technological advances are absolutely irreplaceable by 10w Marine Corps. Qian Lao's efforts enabled China to reach a strategic balance with the United States and the Soviet Union and enabled China to protect itself in the cold war environment.

If we have to say how much it is worth, I think it takes at least two or three aircraft carrier formations and one or two ballistic missile nuclear submarines to barely cover the value of the money. Besides, weapons or armies are not permanent. No matter how advanced the weapon is, it will fall behind one day, and no matter how powerful the soldier is, he will grow old. But Qian Lao's technical contribution to China and China's nuclear umbrella at the most critical moment are immortal.

What is the value of Qian Xuesen in the United States depends on what he can achieve in another 20 years in the United States. He can help the United States update two generations of wind tunnel systems, develop better fighter engines and better rocket engines, train several top engineering experts, train several doctoral students and publish some academic papers.

He gave a country that can't build a car a supporting production base, production technology, talent system and design system that can build a missile, gave China a fully functional missile that can fly into the sky, gave China rocket-space-class propulsion technology, and gave China an original technical reserve on weapon-class intercontinental missiles. At first, China didn't have the independent construction technology of the big killer of a P5-level country, but Qian Xuesen let China have it. Everything about China's through train of truth and aerospace now comes from Qian Xuesen and a generation of scientists who serve the country with him.