Recently, the School of Physics of Zhengzhou University has made significant progress in the research of new copper-based halide White LED. The relevant achievements have been published in the internationalwell-knownjournalAdvanced Materialsas a paper entitled “High Color-Rendering Index and Stable White Light-Emitting Diodes by Assembling Two Broadband Emissive Self-Trapped Excitons”, whichischosen for the cover of the journal. Zhengzhou University is the first author affiliation. Ma Zhuangzhuang, a PhD student enrolled in 2019, is the first author. Associate Professor Shi Zhifeng, Professor Shan Chongxin and Professor Zhang LijunfromJilin University are the corresponding authors.