Xia Feng gripped the Heaven-Burying Sword, similarly spraying a mouthful of Essence Blood onto its blade.
The result was different from the Void Cauldron's magnificent display after receiving Xia Tianming's Essence Blood.
The Heaven-Burying Sword seemed to emit an unpleasant sword hum, then swept out a circle of Sword Qi horizontally.
Although it attacked the core disciples of the Four Great Clans, the attack was not as powerful as when Xia Feng controlled it with the Great Dao.
This added a few more elements of doubt to Xia Feng's expression, wondering why it happened this way.
However, given the urgency of the situation, he couldn't afford to think about it too much and could only quickly switch to channel the Great Dao Rules into the Heaven-Burying Sword.
The patterns on the blade grew heavier, then Xia Feng swept forward, releasing a sharp Sword Qi accompanied by the rules of the Great Dao of Celestial Sword toward the disciples of the Four Great Clans.
