On June 15th, 1955, under the nose of the FBI, Qian Xuesen and his wife, Jiang Ying, skillfully cooperated and successfully sent a distress letter to the motherland, which enabled Qian Xuesen&;s family, who had been under house arrest in the United States for five years, to return to the motherland. What happened between Qian Xuesen and his wife Jiang Ying that led Qian Xuesen to be put under house arrest in the United States? The main reason is that Qian Xuesen was so excellent that even dani king Bull, then undersecretary of the US Navy, said, &”;No matter where you are, Qian Xuesen is worth five divisions.&”; It is no exaggeration to say this. Qian Xuesen was born in Shanghai on December 11th, 1911. After graduating from Jiaotong University in 1934, he passed the examination with excellent results, and was the seventh class of boxer indemnity students studying in the United States in Tsinghua University. (A total of 20 places) In September 1935, Qian Xuesen successfully entered the Massachusetts Institute of Technology to study, focusing on aviation. Later, Qian Xuesen started a life of &”;opening up&”;. It took him only one year to obtain a master&;s degree in aviation engineering in September 1936. Next, in order to further his studies, he was admitted to the Aviation Department of California Institute of Technology to study for a doctor&;s degree. His tutor was the world-famous scientist von Carmen. With his own efforts and talents, Qian Xuesen soon became von Carmen&;s most proud student. Qian Xuesen&;s family was on their way back to China. In 1939, Qian Xuesen, who was only 29 years old, obtained a doctorate in aviation and a doctorate in mathematics from California Institute of Technology, and completed the research on high-speed aerodynamics with von Carmen, and established the world-famous &”;Carmen-Qian Xuesen&”; formula. The establishment of this formula provides a strong theoretical support for the early aircraft to overcome thermal barriers, sound barriers and other problems, and also lays a solid foundation for the development of world aerodynamics. At this time, Qian Xuesen, although only 29 years old, has become a world-famous aerodynamic expert. As a super &”;schoolmaster&”;, Qian Xuesen is certainly not satisfied with his existing achievements, and he wants to conduct more extensive research. As a result, Qian Xuesen began to study rockets, missiles, aerodynamics, solid mechanics and other fields. His mentor von Carmen later spoke highly of Qian Xuesen: &”;My friend Qian Xuesen is definitely a super genius. During World War II, he made great contributions to American rocket research and was a first-class rocket expert. People often say that I discovered Qian Xuesen; In fact, Qian Xuesen discovered me. &”; Qian Xuesen&;s family can say that Qian Xuesen and von Carmen are also teachers and friends, and Qian Xuesen deserves von Carmen&;s praise. During World War II, the V2 missile developed by Germany was a headache for the West led by the United States, so the United States set up research institutions for missiles and rockets. Qian Xuesen laid a solid foundation for the research and development of surface-to-surface missiles and sounding rockets in the United States with his rich knowledge and diligent spirit, and was one of the pioneers of the first generation of rocket research in the United States. At that time, the United States called Qian Xuesen &”;a great and inestimable contribution&”;. After Germany&;s defeat, the United States even sent Qian Xuesen to Germany as a colonel of the US military to participate in the interrogation of scientists such as wernher von braun, the &”;king of rockets&”;. It can be said,At that time, the United States attached great importance to Qian Xuesen, and even gave him the highest-level pass. Qian Xuesen not only enjoyed free access to the Pentagon, but also participated in the research of various top-secret military projects. At the same time, in order to retain Qian Xuesen, in February 1947, the United States specially hired 37-year-old Qian Xuesen as the youngest tenured professor at MIT. The benefits that this tenured professor can enjoy are very high and extremely difficult to obtain. Qian Xuesen is in the United States (fourth from the right). In the eyes of the United States, Qian Xuesen will definitely choose to stay in the United States, because the United States has given Qian Xuesen unimaginable prosperity and great prospects. But in Qian Xuesen&;s view, all fame and fortune are floating clouds, and his goal is only one, that is, to serve the motherland. Qian Xuesen didn&;t even save any insurance money in the United States, because he didn&;t want to stay in the United States for a lifetime at all, and naturally he wouldn&;t consider things after retirement. Qian Xuesen later said to people: &”;During my 20 years in the United States, all my studies and research were in preparation for returning to China. I want to learn more knowledge, so that one day when I return to my motherland, I can better contribute to my motherland.&”; On October 1, 1949, when it was newly established, Qian Xuesen saw hope. He was so excited that he couldn&;t sleep all night and immediately set out to apply for returning to China. But how could the United States easily let Qian Xuesen return to China? As a result, waves of people came to persuade Qian Xuesen to stay in the United States, constantly tempting Qian Xuesen with fame, status and money, but Qian Xuesen&;s attitude was always very firm. Qian Xuesen, who is dedicated to serving the country, has no choice but to threaten Qian Xuesen naked, saying that he would rather shoot Qian Xuesen than allow him to return to China, because Qian Xuesen is worth at least five divisions wherever he is. Later, the United States even fabricated the crime of &”;espionage&”;, conducted secret surveillance on Qian Xuesen, abolished Qian Xuesen&;s senior authority at the same time, and hinted that Qian Xuesen would immediately resume all treatment as long as he stayed in the United States, but Qian Xuesen was not intimidated by the United States. On August 23, 1950, Qian Xuesen took his whole family to board a plane to return to China in the name of returning home to visit relatives, but then the US Immigration Bureau illegally detained Qian Xuesen&;s family and forcibly sent them back to California Institute of Technology on trumped-up charges of carrying top secret documents. On September 7, 1950, after the FBI arrested Qian Xuesen, he was locked up on an isolated &”;rattlesnake&”; island, where Qian Xuesen suffered great torture. In order to psychologically crush Qian Xuesen, the FBI deliberately kept Qian Xuesen from sleeping, interrogated Qian Xuesen for more than 10 days, and woke him up every 15 minutes at night. Qian Xuesen&;s inhuman torture in the United States made Qian Xuesen lose more than 20 kilograms in just over 10 days, but Qian Xuesen never gave in and insisted on returning to the embrace of the motherland. While Qian Xuesen was arrested by the FBI, many scientists of California Institute of Technology began to vindicate Qian Xuesen, and even jointly wrote to the US Congress to express their outrage to the FBI. In the end, under pressure, the United States had to allow Qian Xuesen to go home on bail on September 22, 1950, after Feng Carmen, Qian Xuesen&;s mentor, raised and paid $15,000 in bail. althoughHowever, Qian Xuesen returned home, but his personal was greatly restricted. The FBI monitored Qian Xuesen for 24 hours, requiring him to register at the immigration office every month, and ensuring that he could be summoned at any time. This kind of house arrest is absolutely great torture for Qian Xuesen in anxious to return. In the next five years, Qian Xuesen moved five times, but to no avail. Qian Xuesen Because Qian Xuesen studied high-tech fields, this isolated life was a devastating disaster for his research. In order to keep himself from falling behind, Qian Xuesen began to study a brand-new field of engineering control. On the one hand, the motherland needs such a research field, and on the other hand, it can tell the United States that it has changed its research direction, thus reducing the FBI&;s surveillance on itself and creating conditions for returning to China. Qian Xuesen is really a great genius. In that environment, he made a great breakthrough in the field of engineering control by hims《工程控制论》 with 300,000 words. Once this book was published, it immediately caused a sensation in the world, because Qian Xuesen&;s research marked the establishment of engineering control, and Qian Xuesen also became the originator of engineering control. Although Qian Xuesen has never stopped on the road of scientific research, his wish to return to China has never been realized, which can not help but make Qian Xuesen extremely upset, but a turning point will come soon. Young Qian Xuesen In May 1955, Qian Xuesen saw a photo on the rostrum of the motherland in a newspaper. In that photo, Qian Xuesen was pleasantly surprised to find an acquaintance-Chen Shutong. Chen Shutong was the vice chairman of the National People&;s Congress, Qian Xuesen&;s grandfather, and once a student in Chen Shutong. Therefore, Qian Xuesen was taken by his grandfather to visit Chen Shutong many times when he was a child, so he was naturally familiar with Chen Shutong. As a result, a plan appeared in Qian Xuesen&;s mind. Due to his long-term house arrest in the United States, Qian Xuesen has been unable to get in touch with the motherland. This time, Qian Xuesen decided to express his strong desire to return to China by writing to Chen Shutong. Qian Xuesen believed that the motherland would try to rescue him after seeing his letter. Qian Xuesen finished writing the letter soon, but how to mail it back to the motherland became a difficult problem. Reasoning, Qian Xuesen decided to use the method of big letters and small letters. He asked his wife, Jiang Ying, to write a letter to his sister Jiang Hua, who was far away in Belgium, and hid his letter in it. Through Jiang Hua, he mailed the letter to his father, who then handed it over to Chen Shutong. Jiang Ying, the wife of Qian Xuesen, in order to make this letter easier to be released, Qian Xuesen specially asked Jiang Ying to write on the envelope with his left hand, imitating children&;s handwriting, and then inspected the personnel. After everything is ready, Qian Xuesen&;s problem is how to avoid the surveillance of the FBI and put the letter into the mailbox, because once the FBI sees Qian Xuesen or Jiang Ying&;s mail, it will definitely open it and check it carefully. On June 15th, 1955, Qian Xuesen and Jiang Ying pretended to go out shopping. After seeing it, the FBI immediately followed closely and monitored it. However, Qian Xuesen and his wife stopped and went, and the FBI did not find anything special. When he arrived at a business meeting, Qian Xuesen pretended to be tired and didn&;t enter the mall.Jiang Ying quickly entered the mall, so the two men suddenly separated. Because Qian Xuesen was the key surveillance object of the FBI, he didn&;t follow Jiang Ying into the mall, but just stayed outside to closely monitor Qian Xuesen. After Jiang Ying entered the mall, he quickly put the letter into the mailbox in the mall while there was no one to watch, and completed the task. Then Jiang Ying went shopping for a while before coming out to meet Qian Xuesen. They continued to stroll for a long time and finally returned home. The wedding photo of Qian Xuesen and his wife Jiang Ying was not seen by the FBI when the letter was delivered. In addition, it was written by children and the mailing address was Belgium, so the letter was successfully mailed to Belgium. Jiang Hua, who is in Belgium, immediately understood the meaning of her brother-in-law after seeing the letter inside. She quickly mailed Qian Xuesen&;s letter, and this letter reached Qian Xuesen&;s father. It can be said that it was Qian Xuesen&;s careful calculation and close cooperation with Jiang Ying that made this letter mailed out smoothly. Finally, this letter went through many difficulties and finally returned to the motherland. After receiving this letter, Chen Shutong immediately handed it to Premier Zhou. After reading Qian Xuesen&;s letter, Premier Zhou immediately instructed to rescue Qian Xuesen with all his strength. Qian Xuesen and his wife, Jiang Ying, happened to meet in Geneva. The United States made a request to China to repatriate 11 American pilots (who were captured by China in the Korean War). Premier Zhou instructed Ambassador Wang Bingnan to ask the United States to allow Qian Xuesen&;s family to return to China. Johnson, the representative of the United States, played dumb at the beginning, saying that Qian Xuesen lived well in the United States and didn&;t want to go back. All the international students who wanted to go back had been put back in the United States. After listening to Johnson&;s words, Ambassador Wang Bingnan directly took out Qian Xuesen&;s letter and read it to Johnson in public, which exposed the lies of the United States and embarrassed Johnson for a while. Qian Xuesen&;s family on their way back to China, and Johnson immediately reported this situation to the United States. The United States believed that Qian Xuesen had been under house arrest for five years and lost his scientific research value, so it agreed to use Qian Xuesen in exchange for the request of 11 American pilots. In this way, Qian Xuesen can finally return to the motherland. On September 17, 1955, Qian Xuesen&;s family successfully boarded the ship returning to China and arrived on October 8. On Qian Xuesen&;s way back to China, Premier Zhou specially sent a telegram to Qian Xuesen in the tone of Qian Xuesen&;s father: &”;Don&;t get off the boat along the coast.&”; With the help of the motherland, Qian Xuesen went through many twists and turns and finally returned to his motherland, which he missed day and night. After returning home, Qian Xuesen gave full play to what he had learned and made every effort to contribute to the new construction. Qian Xuesen, a great scientist, is the &”;father of missiles&”;, &”;father of aerospace&”;, &”;father of automation control&”; and &”;king of rockets&”; … In 2007, he moved the organizing committee and once commented on Qian Xuesen when awarding him the person of the year: &”;In his mind, the country is the most important, the family is the most important, science is the most important, and fame and fortune are the lightest. Returning to China in 5 years, two bombs in 10 years. He was the pioneer in the creation of the motherland&;s space flight, splitting the thorns, forging wisdom into a ladder and leaving it to later climbers. He is the treasure of knowledge, the banner of science, and the knowledge of the Chinese nation.A model of children. &”;Salute to the old money! Pay tribute to the great scientists!