Annotated X-ray RGB map of a 25 square degrees region in the disk of the Milky Way (the so-called Galactic Ridge) obtained by eROSITA in October 2019. In this field, thousands of Galactic X-ray sources are detected, as well as a numberof quasars observed through the Galactic disk. In addition to many individual sources, the map also shows unresolved X-ray emission from hot gas and from a multitude of faint unresolved sources. Blue and green correspond to high photon energies emitted by a gas with a temperature of tens of millions of degrees, while red regions reveal colder gas oflower temperature. Adopted from Gilfanov et al. (in prep.). Absorption in the cold interstellar gas near the Galactic plane attenuates soft X-ray radiation, but allows hard X-ray photons to leak through because their absorption cross-section is smaller. A significant contribution to the apparently diffuse emission from the Galactic disk and bulge is provided by the superposition of emission from numerous accreting white dwarfs, hot coronae of low-mass stars, and flares on them (Revnivtsev et al. 2009). eROSITA cannot resolve individual contributions of these sources because of their great number and low luminosities.