Wuwuwuwuwu!
As the heavy sword entered its body, the huge dog roared and struggled.
When the sharp claws landed on Lu Yuan's body, it was as if they had touched hard metal, and even sparks were produced.
However, it could not cause any harm to Lu Yuan.
Black blood kept flowing out of the dog's wound like a black fountain.
Lu Yuan frowned as he watched.
The color of the beast's blood looked a little strange.
At this moment, a sharp bird cry was heard.
Lu Yuan saw that wisps of black mist emerged from the body of this huge dog.
The mist became thicker and thicker, and finally, it turned into a black shadow and rushed out of the giant dog's body.
Lu Yuan's pupils shrank when he saw the black shadow. He retracted his heavy sword and retreated, looking at the sky vigilantly.
"It's this black shadow?!"