There are many great martial arts novels out there, but here are some popular ones:
"The Condor Trilogy" by Jin Yong - This trilogy includes "Legend of the Condor Heroes," "Return of the Condor Heroes," and "Heaven Sword and Dragon Saber." These novels are set in ancient China and follow the adventures of martial arts heroes and heroines as they battle for power and love.
"Musa" by Jung Chang - This novel is set in the early 20th century in China and tells the story of a young woman who becomes a warrior to defend her family and village against bandits and warlords.
"Shogun" by James Clavell - Although not strictly a martial arts novel, this epic historical fiction tells the story of an English sailor who becomes embroiled in the political and martial intrigue of feudal Japan.
"The Book and the Sword" by Louis Cha - This novel is set in 18th-century China and follows the adventures of a martial arts hero as he tries to protect a precious book from falling into the wrong hands.
"Musashi" by Eiji Yoshikawa - This novel is a fictionalized account of the life of the famous Japanese swordsman, Miyamoto Musashi, and is considered a classic in Japanese literature.
These are just a few examples of the many great martial arts novels out there.