The Thunder Knife Sect originated from the Lightning Sword Sect.
Six thousand years ago, there was internal strife within the Lightning Sword Sect. One of the guardians of the Lightning Sword Sect, after attaining the Divine Transformation stage, took a group of elders and disciples with him and left the Lightning Sword Sect to form his own sect, becoming the founder of the Thunder Knife Sect.
The Thunder Knife Sect had its own technique, the "Thunder Knife Technique," which was practically the same as the "Lightning Sword Technique" of the Lightning Sword Sect, with the only difference being the weapon that was used.
The guardian, elders and disciples who left the Lightning Sword Sect changed to using the knife instead of the sword in order to distinguish themselves from the Lightning Sword Sect.
Since then, the planet gained a new strong sect, the Thunder Knife Sect.
