On August 25th, it was reported that the research team, helmed by Researcher Liu Hongjun from the Transient Optics Laboratory at the Xi'an Institute of Optics and Precision Mechanics (XIOPM) under the Chinese Academy of Sciences, has recently achieved a significant milestone in the realm of mid-infrared nonlinear frequency upconversion imaging, leveraging the power of metasurfaces. The pertinent research outcomes have been published in the esteemed journal Laser & Photonics Reviews. This groundbreaking study broadens the regulatory scope of nonlocal metasurfaces to encompass continuous-wave nonlinear frequency conversion, thereby paving a novel avenue for the development of compact, cost-effective, and highly sensitive mid-infrared detection technologies. With its inherent potential for on-chip integration, this technology holds immense promise for widespread application in diverse fields, including gas detection, environmental surveillance, biomedical imaging, and integrated photonic sensing.