Fermi-LAT TS map in Galactic coordinate above 2 GeV, which shows the sources present in the 4FGL-DR3 catalog with their 95% positional errors (magenta and red ellipses). The small green rectangle indicates the position of the LHAASO source with statistical uncertainty on RA and Dec derived from a two-dimensional Gaussian model, while the smaller green circle represents 95% position uncertainty of 0.14° reported by Cao et al. (2021a). The larger green circle indicates the 95% UL on the source extension (0.26°). The white cross highlights the position of a new potential hard source, whereas the yellow contour indicates the FoV of the previously discussed XMM observation.