On March 27th, the national major scientific and technological infrastructure high-energy synchrotron radiation source HEPS officially announced the launch of integrated debugging with light, marking the sprint stage of HEPS device construction. HEPS is the fourth generation synchrotron radiation light source with the world's highest brightness design, and also the first high-energy synchrotron radiation light source in China. As of January 2025, after multiple rounds of beam current debugging, the beam intensity of the HEPS storage ring has reached over 40mA, and the emissivity has been reduced to 93 picometer radians. HEPS project commander Pan Weimin introduced that the emissivity of the electron beam is one of the important parameters describing the quality and characteristics of the electron beam. The smaller the emissivity, the less dispersed the electron beam in the transverse direction, and the closer the motion distribution of the electron beam is to the axial direction of the beam. The better the quality of the beam, the higher the brightness of the synchrotron radiation emitted. In January of this year, HEPS implemented an innovative injection mechanism, namely displacement injection based on high-energy accumulation of boosters - this scheme not only meets design requirements but also makes HEPS accelerators more environmentally friendly. HEPS aims at the forefront of world technology and major national needs, breaking through key optical and detector technologies, and constructing 14 user beamline stations and 1 testing line station in the first phase. Among them, the hard X-ray imaging line station HXI is one of the characteristic line stations of HEPS, which can provide high-energy X-rays with high spatial coherence. It will be launched on October 12, 2024. The experimental results show that compared with conventional light sources, the HXI line station has deeper light penetration, higher resolution, significantly improved sensitivity, significantly increased detectable cracks, and greatly improved imaging contrast. Dong Yuhui, Executive Vice Commander of HEPS Engineering, introduced that the high-energy X-ray imaging detector independently developed by the line station team has reached the world's leading level in pixel count. In diffraction imaging mode, a single scan can obtain diffraction signals of hundreds of thousands of sample points in parallel, greatly improving the efficiency of imaging data acquisition. At the same time, the line station relies on the advantages of HEPS's high energy and low emissivity, innovatively designs an insert group, adopts an ultra long object source distance, and can provide high-energy X-rays with energy up to 300 kiloelectron volts. The spatial coherence length is 3.5 times that of the international advanced level. The HXI line station can achieve strong penetration, high sensitivity, large field of view, and high-resolution X-ray imaging that is difficult to achieve simultaneously. It will provide strong scientific research support for cutting-edge fields such as aerospace engineering materials research and whole brain mesoscopic 3D imaging. At the same time, the first phase of multiple beamline stations started light debugging, carried out characteristic sample experiments, optimized the quality of the electron beam in the storage ring, and further improved the experimental quality of the beamline stations. HEPS is one of the major national science and technology infrastructure prioritized to be constructed during the "13th Five Year Plan" period in China. It is a core device approved by the National Development and Reform Commission and jointly built by the Chinese Academy of Sciences and Beijing to build Huairou Science City. The construction is undertaken by the Institute of High Energy Physics of the Chinese Academy of Sciences. It was started in June 2019, with a construction period of 6.5 years. (New Society)