Mr. Qian Xuesen is a very good scientist, and when he was young, he obtained the qualification to study abroad because of his outstanding ability.
After arriving overseas, he has been working hard to learn scientific knowledge. Soon, Qian Xuesen, who had extraordinary ability, relied on his own wisdom and achieved outstanding achievements.
After the founding of New China, Qian Xuesen immediately decided to return to China and use the scientific knowledge he learned abroad to help the country carry out follow-up development.

As a result, as soon as he was prepared, the United States sent people to his home to conduct a malicious investigation, and also used some absurd reasons to detain him.
In the following years, the United States constantly sent people to coerce and induce Qian Xuesen to try to make him change his mind and stay in the United States to continue scientific research. But Mr. Qian Xuesen has never been moved, and he only has one idea in his heart, that is, to return to the motherland as soon as possible and contribute everything to the motherland.
In 1955, Qian Xuesen, who had been imprisoned for many years, broke through many obstacles because of the care of the central leadership and returned to the motherland that he thought about day and night.
So, after Qian Xuesen returned to China, how much did the state leaders attach importance to him? Explaining this is easy, just look at the two "bodyguards" around him and you'll know.
The first bodyguard around Qian Xuesen is named Diao Jiubo, a veteran who fought the Korean battlefield. After returning to China, because of his great merits, he entered the Central Guard Corps.
Premier Zhou believed that Diao Jiubo was a trustworthy and excellent soldier, and when he selected the guard secretary for Qian Xuesen, he selected Diao Jiubo at a glance.
It is worth mentioning that according to the regulations of the state at that time, only the central leaders at the level of "four deputies and two highs" were qualified to appoint guard secretaries.
According to the theory, Mr. Qian Xuesen cannot be equipped with a guard secretary, and the state has assigned him a guard secretary, which is an exception.
Diao Jiubo knew that the state attached great importance to Mr. Qian Xuesen, and after arriving at Qian Xuesen's side, he immediately conducted a strict investigation of the surrounding environment and never let go of any suspicious clues.
In addition, he himself is closely guarding Qian Xuesen, no matter where Qian Xuesen goes, he will follow as much as possible.
Every time an outsider wanted to see Qian Xuesen, he would guard against it and make sure that there was no problem before putting people in.
In addition to security work, Diao Jiubo, as the secretary of the personal guard, often helps Qian Xuesen deal with some work problems. Because of his several positions, Diao Jiubo has to be busy for a long time every day.
Late one night, because he was too tired, he couldn't help but yawn, and Mr. Qian Xuesen saw that he was too tired and hurriedly persuaded him to go back to rest.
Diao Jiubo believes that doing a good job in security work is more meaningful than winning the battle, and insists on refusing to go back to rest. Although he did not follow Mr. Qian Xuesen's advice, he firmly remembered Qian Xuesen's concern.
Later, Because Qian Xuesen was too busy at work, he slept later and later, and he was very tired every day. Diao Jiubo couldn't bear to see him suffer so much, and couldn't help but persuade him, if you really can't do it, you should rest early.
Mr. Qian Xuesen had not rested for more than ten consecutive hours at that time, but he still replied to Diao Jiubo in good spirits, saying that the study had reached the most critical moment, and I could not rest at this time.
Diao Jiubo saw that Mr. Qian Xuesen attached so much importance to his work, and he also hurried to raise his spirits and accompany him to overcome difficulties.
Mr. Qian Xuesen's research has provided great help to the country's scientific development, and because of these historical contributions, he has received special attention from the national leadership, and has also been hated by some bad people.
In order to assassinate Mr. Qian Xuesen, the enemy poisoned through food several times. If Qian Xuesen accidentally eats it, he will definitely be greatly hurt.
Fortunately, the enemy's plot did not succeed, and the conscientious and responsible Diao Jiubo would check the food hygiene in advance every time, and did not let the Qian Xuesen family be persecuted by the enemy.
Diao Jiubo's personal ability is recognized by everyone, but the state leaders, just in case, still sent a person to be responsible for Mr. Qian Xuesen's dietary safety.
This person is Qian Xuesen's second "bodyguard" Duan Enrun, who is a laboratory inspector who is mainly responsible for food safety work.
After being responsible for Mr. Qian Xuesen's dietary safety, Duan Enrun immediately inspected and tested all the ingredients in the home to ensure that there was no problem before handing them over to Qian Xuesen's family for use.
In order to facilitate Duan Anrun's sample retention test, the state specially allocated a fund to import a refrigerator from the Soviet Union.
Duan Enrun knew that Mr. Qian Xuesen shouldered the expectations of the country, and he also knew that the enemy had been trying to find ways to assassinate him. In order to avoid accidents, he especially stressed to Qian Xuesen that he must eat the food after the test, and cannot go out to purchase at will, even if it is a snack for the children at home, he must be tested in advance.
In addition to ensuring food safety, Duan Anrun is also responsible for the nutritional health of Mr. Qin's family. Every time Qian Xuesen's family eats, he will arrange enough fruits and vegetables, and will also prepare some meat to ensure that the family is fully nutritious and that there is no problem.
At the beginning, Qian Xuesen accepted this kindness because he did not understand the situation in the country. After a period of time, Qian Xuesen, knowing the country's economic difficulties, took the initiative to cut his own food expenses, reduce his living standards, and save more resources for the country.
Both Diao Jiubo and Duan Enrun knew that Qian Xuesen was a patriotic scientist who was bent on serving the country and generally did not refute his opinions, but this time, the two collectively expressed their opposition.
They strongly recommend that Qian Xuesen continue to maintain his original standard of living and not lower his own food standards for economic reasons.
Mr. Qian Xuesen's work is already heavy, it needs to consume a lot of brain power, if nutrition can not keep up, it will definitely affect his physical health and work progress.
Therefore, Diao Jiubo and Duan Enrun repeatedly stressed to Qian Xuesen that we must eat well and sleep well, maintain a good mental state, and do not worry about other things.
Mr. Qian Xuesen also knows that the research work he is responsible for is quite important. In order to repay the expectations of the country, he made up his mind that he must work harder to study the results as soon as possible and contribute more to the later development of the country.
After several years of unremitting efforts, China's various technologies have developed significantly. In 1964, China even managed to detonate its first atomic bomb.
Qian Xuesen, who is a hero of two bombs and one star, has been specially praised by the state leaders for his previous historical contributions.
After the reactionary forces learned of Mr. Qian Xuesen's situation. An even more heart-wrenching assassination was carried out on him. Because of the strict defense of Diao Jiubo and Duan Enrun, the assassination of these people has never succeeded.
From this point of view, Diao Jiubo and Duan Enrun can also be regarded as making great contributions to the scientific development of the country.