Dr. Rui Shi received his Ph.D. from the School of Chemistry at Sun Yat-sen University, China, in 2018 for his work on the Vacuum Ultraviolet (VUV)—UV spectroscopic study of lanthanide-doped materials. Following graduation, he continued his career as a researcher at Sun Yat-sen University, University of Aveiro, and Stockholm University, Sweden, respectively. His current research interests are associated with the investigation of lanthanide-doped luminescent nanocrystals.