Abstract: Beryllium (Be) is a strategic rare metal indispensable for aerospace, defense, and nuclear energy. China’s limited domestic reserves and high external dependency necessitate urgent breakthroughs in beryllium exploration. The Nanling Metallogenic Belt, a premier W-Sn-rare metal province, is genetically linked to the magmatic-hydrothermal evolution of highly fractionated granites. While these highly evolved granites possess significant potential for Be mineralization, the enrichment mechanisms and exploration prospects in this region remain poorly constrained. Guided by Be-enrichment patterns and "full-temperature range" mineralization theory, this study targets the Yaogangxian magmatic-hydrothermal system. We report the discovery of abundant fine-to-coarse-grained beryl coexisting with high-grade quartz-vein wolframite. Mineralogical and geochemical evidence characterizes these as alkali-free beryl, where (Fe, Mg) and (Na, Cs) undergo coupled substitution for Al in the crystal lattice. We propose that this mineralization resulted from mid-to-high temperature hydrothermal fluids exsolved during advanced magmatic fractionation. This Be-W paragenesis is widely distributed in the deeper sections of "five-story" type tungsten deposits, representing substantial resource potential and high value for comprehensive mineral utilization. The first findings at Yaogangxian provide a critical scientific framework for deciphering Be-enrichment mechanisms and guiding strategic exploration in the Nanling tungsten province.