Lingyin Huang, often referred to as 'Rin', is a key character in the anime series IS: Infinite Stratos. She is a second-year student at the IS Academy and serves as the IS representative of China. Known for her fiery personality and martial arts prowess, Rin pilots the Shenlong, a powerful IS unit. Despite her tough exterior, she harbors feelings for the protagonist, Ichika Orimura, whom she has known since childhood. Her character adds depth to the series through her dynamic relationships and competitive spirit, often clashing with other representatives over Ichika's attention.