C3274 The Battle of Mo Xie
"The Heaven-Slashing Immortal didn't understand. After a series of investigations, he found out that it was the Boundless Heaven-Slashing Sword in his hand.
If he used it once, a portion of his energy would be absorbed, and it would not recover at all!
Therefore, he decided to seal the Boundless Heaven-Slashing Sword and cultivate in seclusion in an attempt to recover his strength