In 1957, a Chinese woman was detained by customs on her way back to China from the United States.
Customs officers were ordered to "stop her and not let her return to China."
To stop the woman returning to China, customs officers carefully searched her suitcase.
When the customs officer looked at the two medicine bottles, the woman's heart went to her throat until the customs officer put down the medicine bottles.
Unable to find fault with this woman, they cleverly made her hand over her entire $6,800 savings on the funny reason that "dollars must not flow to Chinese mainland", in an attempt to make her retreat.
However, she did not care about confiscating her entire $6,800 savings.
Who the hell is she? Why did the customs officers go out of their way to make things difficult for her?
Why would she give up her entire fortune to protect these two vials at all costs and resolve to return to China?
She is Lin Lanying, the first female doctor of the University of Pennsylvania, and the famous "mother of China's semiconductor materials" in mainland China.
Why did she return home? Why worry about those two pill bottles?
The reason was a letter sent from China, and the five words on the letter made her desperate.
In 1918, Lin Lanying was born in Putian, Fujian, she was the eldest daughter in the family, with her bright mind, junior high school escort, and became the only girl in the high school of Putian Middle School in high school.
Then, he was admitted to Fuzhou Union University with a good score of first place, and after graduation, he was retained to teach because of his excellent grades.
At that time, Lin Lanying witnessed the poverty and weakness of the motherland, and knew the importance of science and technology to revitalize the country.
She decided to continue her studies in order to serve her country.
On August 9, 1948, she became one of the Chinese public students studying abroad and went to the United States to study.
She studied hard and earned a bachelor's degree in mathematics from Dickinson College a year later.
Due to her continuous study, in 1955, Lin Lanying became the first female doctor since the establishment of the University of Pennsylvania.
At that time, the American company Sophinia, which was experiencing difficulties in the research and development of silicon single crystals, decided to seek talents from top universities, and Lin Lanying became their first choice.
The reason is that Lin Lanying holds two patents for the research and development technology of silicon single crystal and germanium single crystal, which is able to solve the problems that Sophonia is currently facing.
She did not disappoint Sophinia, and with her help, the first silicon single crystal was produced in Sophinia, and broke the technical bottleneck and made a huge profit.
Therefore, Lin Lanying received a super high annual salary of 10,000 US dollars, however, so much money made her not happy.
Because the wisdom achievements she worked hard to create have only been recognized abroad, there is still a blank on semiconductor research and development in China, and whenever she thinks about this, she feels anxious.
The letter from the motherland, "the motherland needs you", made her feel desperate to return to China
Knowing that she had mastered the key technology, Lin Lanying knew that her return to China would not go smoothly, and the actual situation was as she expected.
In order to resign from the position of Sophoenia, Lin Lanying made up the reason why her mother was seriously ill and urgently needed to visit, but the company would not easily let go of this valuable talent.
The company offered to let Lin Lanying bring her mother to the United States to seek consultation and treatment from top experts.
But Lin Lanying politely refused, saying that her mother was too old to withstand the long journey.
Lin Lanying's mentor learned that she wanted to return to China, and was very sorry, and took turns with several senior brothers to dissuade her, but Lin Lanying had made up her mind.
Due to the obstruction of the United States, she was unable to fly back to China.
With the help of many parties, she finally bought a ticket.
Although I have already obtained the ticket, the journey back home is difficult.
Customs officers were ordered to detain her at any cost.
Customs carefully searched her luggage, and even carefully pinched the corners of her clothes several times.
Eventually, two small pill bottles and $6,800 in cash in her luggage caught the attention of customs.
The customs said in an arrogant tone: "With us, you can't take away any of the money you earn!" ”
When the customs took the small medicine bottle and asked: "What is this?" Lin Lanying's heart beat faster, but she deliberately remained calm: "This is a special medicine that I worked hard to find, and it is very effective for my mother's illness." ”
The customs did not believe it, because they were told to prevent the woman in front of them from returning to China.
Seeing the customs like this, Lin Lanying was a little anxious, and suddenly she thought of an idea and said to the inspector: "Leave all my savings of $6800, can I leave??" ”
Customs officials were immediately impressed by the fact that for $6,800 at the time, several houses could be bought.
After paying the $6,800, the customs officers did not embarrass her.
She quickly picked up the small medicine bottle, stuffed it into the innermost layer of the suitcase, quickly passed through customs, and boarded the return ship.
The whistle sounded, and Lin Lanying finally breathed a sigh of relief and let go of the worries in her heart.
It turned out that these two small medicine bottles contained her scientific research results.
The two most critical raw materials in semiconductor research and development, silicon single crystal and germanium single crystal, are worth $200,000 and are also gifts to the motherland.
Just after returning to China, Xiamen University quickly sent her an invitation, hoping that she would become a physics professor at the university.
Domestic technology companies have also hired Lin Lanying as a technical consultant with high salaries, but she resolutely refused these opportunities.
Her purpose in returning to China is to fill the gap in China's semiconductor research and development field, and national interests are above all else.
Six months later, China successfully independently developed the first silicon single crystal, and one year later, the first germanium single crystal was successfully launched.
By solving the problem of raw materials, China's semiconductor field has made a leap forward.
However, Lin Lanying is not satisfied with her current achievements. She leads the team dedicated to advancing the research and development of gallium arsenide materials.
The purification of gallium arsenide is extremely difficult, and it is difficult to avoid the presence of impurities due to the contact of the material with the container
。 Lin Lanying had a fantastic idea to move the purification test to space.
The results of the test shocked the world, there is no gravity in space, so the gallium arsenide drawn in space has a 200-fold reduction in defect rate.
This breakthrough has broken the records of various countries in the past 40 years, making China's semiconductor material research and development into the forefront of the world.
For the development of semiconductor materials, Lin Lanying chose to never marry.
At the age of 85, she lies in a hospital bed with no children around her.
She said ruefully: "Give me another 10 years and I can develop gallium arsenide even better." ”
At the end of her life, she still thought about the interests of the country, not herself.
Lin Lanying has made great efforts for the development of China's semiconductor materials, and she has always put the interests of the motherland first.
She is a worthy national hero and deserves to be remembered forever.