X-ray spectrum of the Sgr A East region with XRISM Resolve with the best-fitting spectral models. The blue solid line represents the Sgr A East model. The blue dashed lines indicate the Lorentzian models which replace the Fe–He|$\alpha$| and Ly|$\alpha$| lines in the bvvrnei model (see text for methodology). The solid and dashed gray lines represent the spectral models of AX J1745.6|$-$|2901 without and with absorption by ionized Fe atoms, respectively. A reference spectrum with XRISM Xtend is overplotted in red. The inset shows the CIE plasma model with different electron temperatures (⁠|$kT_{\rm e}$|⁠) and a comparison with the data.