In fact, the asymmetry between the mirror particles is not only parity non-conservation, but also a new asymmetry -- the magnetic moment of the positive antiproton is not symmetrical, the difference is up to 6.56*10^-9. The main reason is that the mass difference of the internal components of the positive antiproton, namely Σ± particle mass difference, leads to the slight difference in magnetic moment between the two! Is the cause of difficulty parity nonconservation the same as the asymmetry of the positive antiproton magnetic moment?