Xuantian Fengyun

There is a magic sword in the martial arts called "Xuan Tian Sword". Whoever gets this sword wins the world, and various sects in the rivers and lakes have been fighting over it. Until Ma Xiaotian, the head of the famous sword sect, severely damaged Yan Po of the Guigu sect and obtained the sword, everything settled. Ma Xiaotian wanted to pass the position of master to his apprentice Lu Jiu and handed the Xuantian Sword to him. Unexpectedly, Ma Xiaotian was suddenly killed, the Xuantian Sword disappeared, and Lu Jiu was regarded as the murderer. There is a huge conspiracy hidden behind all this... How can Lu Jiu clear the suspicion and avenge his master? Who is the mastermind behind this?