The Qingyun Sect's four great sword techniques were: [1. Heavenly Sound Sword Technique: Using sound to control the sword qi and making it dance to the rhythm of the sound is known as the Sound Sword Technique.] [2. Xuanming Sword Technique: Using the Dao of Yin and Yang as the foundation, the sword aura is used to achieve a balance between attack and defense.] 3. Green Smoke Sword Technique: Use the spirits of nature as materials to make a sword, dye the sword body with green smoke, and win with lightness skill and speed. [4. Lightning Sword Technique: Using the power of lightning as the foundation, the sword will transform into the shape of lightning, known for its powerful attack power and speed.]