Abstract: This review summarizes the evolution and present capabilities of the XingGuang ultrashort and ultra-intense laser platform at the National Key Laboratory of Plasma Physics (CAEP), which integrates the XingGuang-III (XG-III) multi-pulse facility and the all-OPCPA SILEX-II multi-petawatt system. Targeting inertial confinement fusion (ICF), high-energy-density physics (HEDP), and matter under extreme conditions, the platform enables both extreme-state creation and time-resolved pump–probe measurements. We outline the system architecture, key enabling technologies, and experimental capabilities. The XG-III facility adopts a common-seed, split-and-amplify design that delivers femtosecond/picosecond/nanosecond beams with sub-picosecond timing jitter less than 1.32 ps; typical operating parameters include about 20 J/26.8 fs, about 370 J/(0.48–10 ps) and about 575 J/1 ns, with on-target focal spots below 10 μm (fs) and 20 μm (ps). SILEX-II employs a full optical parametric chirped-pulse amplification (OPCPA) chain to achieve a peak of power about 5 PW after compression to about 18.6 fs while retaining more than 90 J, combining greater than 10¹⁰ temporal contrast (tens of ps before the main pulse) with near-diffraction-limited focusing (about 3.3×4.0 μm FWHM) enabled by adaptive optics and achromatic compensation, reaching intensities above 10²⁰ W/cm². In addition, we present representative multi-beam, coordinated experiments enabled by the platform, including three-dimensional proton imaging of temperature-gradient-driven Weibel magnetic fields and energy-loss measurements of intense ion beams in warm dense plasmas, highlighting its strong potential for frontier research.