The beamline is sourced by a planar hybrid in-vacuum undulator (IVU20.7) with an incident photon energy range of 770-10000 eV. A cylindrical mirror (M1) collects and focuses the divergent beam from the undulator. Considering the broad energy range, two types of monochromators are employed: a plane grating monochromator (PGM) and a double-crystal monochromator (DCM). The PGM consists of a plane mirror (M2) and a variable line spacing (VLS) grating, while the DCM is equipped with Si(111) and Si(220) crystals. The monochromatized X-ray beam is then focused onto the exit slit by a toroidal mirror (M3). The X-ray beam is subsequently refocused to a sub-micrometer spot size by a set of Kirkpatrick–Baez (KB) mirrors to meet the small-spot requirements of the HOPE endstation. Alternatively, the beam can be shaped into a millimeter-scale spot for the HOPE endstation using toroidal mirrors (M3/M4) in combination with a cylindrical mirror (HFM). In addition, the X-rays are also focused by M3 and M4 onto the TEA and IDEA experimental stations, respectively.