Chinese Optics Letters (COL) enters its 20^th year in 2023. Looking back at the journey in the optics and photonics world, we feel
grateful and proud. During the past two decades, COL has published more than 4200 papers and 20 special issues that bear
important ideas and breakthroughs, and has inspired, reached, and served the optics and photonics community. We are looking forward, with
your continued help, to sowing anew and making COL a home for important and innovative research in optics, photonics, and related
disciplines in the next decades.