中国物理学会高能物理分会第十三届全国粒子物理学术会议（2021）

We will present the pion mass and decay constant using the overlap fermion valence on DW fermion sea at several lattice lattice spacings. The mixed action effect in the lattice calculation is also studied, and the result suggests that the mixed action effect with overlap valence on DW sea would be proportional to the fourth power of the lattice spacing.The preliminary determination of the light and strange quark mass m-(u,d,s), F and chiral condensate \Sigma-in the N-f=2chiral limit will also be presented.