编辑给的审稿意见：The obtained half occupied levels around Fermi energy implies that the systems experienced unphysical restrictions during the calculation, e.g., crystal symmetry, spin polarization (or non-collinear spin polarization). As the restriction is removed, the degeneration of the half occupied levels could be removed correspondingly.对其中的experienced unphysical restrictions during the calculation真的不理解，求大神赐教！不胜感激！
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