Chen Jingrun won the jewel in the crown of mathematics, which 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 called 1+ 1 for short. He never proved it in his life. Later, Goldbach died with lifelong regret, but left this mathematical problem. Chen Jingrun proved Goldbach's conjecture by mathematical calculation again and again.