Over the past sixty years,lasers have undergone substantial developments and have revolutionized sciences,technolo-gies,and industries.In particular,the invention of compact semiconductor lasers has made this technology an integral part of everyday life.Metal halide perovskites have recently emerged as an outstanding class of semiconductors holding great potentials in further advancing the laser technology[1].As direct-bandgap semiconductors,the perovskites exhibit very high optical gains comparable to the industry reference materials,gallium arsenide.Their chemical diversity enables broadband tunable lasing from visible to near-infrared spectral regions.The solution-processability makes the per-ovskites suitable for low-cost and large-area laser applica-tions.Most importantly,the perovskites are promising for electrically pumped lasers due to their high and balanced charge carrier mobilities.The solution-processed electrically pumped laser that is expected to unlock a wide range of laser applications is a 'holy grail'of optoelectronics[2].