Seven Weapons: My Sword of Eternal Life

When Shen Tiannan was young, he accidentally fell into a cliff and was rescued by a mysterious old man who taught him a set of martial arts secrets just to let him fulfill a ten-year contract for him! Ten years later, Shen Tiannan became successful in martial arts. With the mysterious old man's last words, he went out into the world to fulfill his promise... He first returned to the former small mountain village and found that the entire village was killed by bandits. Based on the clues he found, he found the bandit's lair and avenged the villagers...