Tianming's master
A legendary swordsman renowned across China, Gai Nie takes in and trains Tianming after his family's downfall.
Personality
Taciturn and rigorous, he embodies an ideal of martial mastery and moral restraint.
Powers & abilities
Considered one of the greatest swordsmen of his era, his reputation alone is enough to deter many opponents.
History
His past, tied to the tensions between the great schools and the imperial court, resurfaces throughout the series through his role as mentor.