That was at the Beijing Mathematics Seminar.

One day, the famous mathematician Hua received a letter from a young teacher in an ordinary middle school. The main idea of the letter is: I read your book "On Stacked Prime Numbers" and found it well written. However, after repeated accounting, it was found that there were calculation errors. It's like scattering a grain of dust on a star. I hope you can correct it.

After reading the letter, Hua immediately opened the book and calculated that he was really wrong. He was full of praise: "This young man is really not simple! It seems that he is also good at math. I must meet this young man. "

Hua read the letter at the mathematical research meeting and invited the young people who wrote it to attend the meeting. This young man was Chen Jingrun, and later he became a famous mathematician, who was praised as "the man who won the jewel in the crown of mathematics".

In this way, Hua found a rare talent from his own mistakes.

Question:

Chen Jingrun, mentioned in the above essay, later won the "jewel in the crown of mathematics". What does this mean? Please collect relevant information after class and write it down simply. You can also collect the deeds of other scientists and write them down to communicate with you.

Reference answer:

Chen Jingrun's "jewel in the crown of mathematics" means that he cracked Goldbach's conjecture.

(Specific content: Goldbach put forward that' any even number can represent the sum of two prime numbers', which is abbreviated as'1+1'. He has never proved it in his life. Later, Goldbach passed away with a lifetime of regret, but left this math problem behind. Chen Jingrun, on the other hand, proved Goldbach's conjecture by repeated mathematical calculations, and it was correct to change the original "1+ 1" to "2+ 1". )