The Change Rule Method in Solution of Goldbach-Guye’s Conjecture

Goldbach's conjecture and Guye's conjecture compose the Goldbach-Guye's conjecture:any non-zero even number(z) can be expressed as the sum or subtraction of two prime(y and x) :that is z+=y+x,orz-=y-x.When z+ or z-is known,how to solve the y and x? This paper introduces the plane rule method(according to the slide rule principle,applying the relative displacement of fixed rule and moved rule,Goldbach-Guye's conjecture can be solved) ,and puts forwards the improvement of contraction rule based on references [8] to make this method more perfect.