As always, the erudite middle-aged man indeed provided an answer, "Gudao's 'Lone Sword,' a truly powerful swordsmanship technique, one of the renowned sword techniques in the Seven Kingdoms of this era. However, it's difficult to master, and coupled with the fact that the disciples of Gudao Peak have always been few across the generations, its dissemination is limited. By this generation, only the master and disciple pair remain."