Cough, cough, in any case, Xuan Yue once saw a similar move in the Mystic Sect Daoist Sutra. Although it was not a saber technique, it was similar, simulating the circulation of Qi between heaven and earth. The Qi released would not dissipate into the world; instead, like rain, it would fall to the ground, evaporate again, gather into clouds and fall as rain, entering a new cycle. Thus, the longer the fight lasts, the more intense the 'rainwater' becomes, culminating in a torrential downpour, creating its own world, transforming into an unbreakable, unending storm domain!
As for the move in front of them, it is,
Kuang Dao's Great Rainstorm!!
"Three Elements Return to Truth, Divinity Transformation Sword!!"
When everything is clear, strike!
