This theorem proves that any large enough even number can be expressed as the sum of the products of a prime number and no more than two prime numbers, which is what we usually call "1+2".
Chen Jingrun and Shao Pinzong's Goldbach Conjecture (Liaoning Education Press) wrote on page 1 18: The "1+2" result of Chen Jingrun's theorem means:
For any big even number, you can always find the prime number P', p ",or P 1, P2, P3, so that at least one of the following two equations holds:
“N = P '+P”(A)
N=P 1+P2*P3 (B)
Of course, it is not excluded that both (a) and (b) are true, such as 62=43+ 19, 62=7+5× 1 1. "