Left: best-fit vsedov+vnei model to the X-ray spectrum of MCSNR J0506−7025. The green solid line represents the pure Fe component, the dashed red line shows shell component, the magenta dash-dot lines indicate the AXB components, and the blue dash-dot-dot-dot line shows the combined contributions of the QPB, instrumental fluorescence lines, and electronic noise. Right: best-fit vnei+vnei model to the X-ray spectrum of MCSNR J0527−7104. Same as left except the dashed red line represents the pure O component. In both cases, only the EPIC-pn spectrum is shown for clarity. Best-fit parameters for MCSNR J0506−7025 and MCSNR J0527−7104 are given in Tables 2 and 3, respectively.