"Whew!" All the undead armies suddenly opened their mouths at the same time and roared, replenished by Mu Yun's energy, their murderous aura and fighting spirit seemed to be even stronger, a pair of demonic dark green pupils flashed with a ghostly light, and the dark energy on the undead warriors seemed to have become much richer.

In the black mist, countless holy warriors in the underworld on the ground fought to the death with the undead warriors, although the strength of the undead warriors was weak, but they were immortal, they fell here, and they were resurrected to join the battle in a few minutes, and the killed holy warriors were shrouded in Mu Yun's energy, and immediately became new undead warriors, so that Mu Yun's undead army had already occupied an overwhelming advantage in just ten minutes.

"Whew!" The centaur let out a terrifying roar, and then heard a series of heavy footsteps on the ground, "Knock knock! The violent concussion shook all the undead warriors to the ground, and cracks began to crack in the ground.

Seeing that the situation was not good, Mu Yun hurriedly flew into the sky to the place where the centaur beast in front of him was, and kept calling with a soul transmission voice in his mind: "Xiao Hei, Xiao Hei!" How are you? Talk back! ”

"Whew!" There was still only an angry roar in front of him, but there was no response from Xiao Hei, the shaking of the earth became more and more intense, and Mu Yun's mood became more and more nervous.

"Aang!" Suddenly, a sharp dragon groan sounded in mid-air, and the sound seemed to be mixed with pain, Mu Yun hurriedly turned on all the battle qi spiritual power, and quickly swept towards the source of the voice, "Xiao Hei! She screamed Xiao Hei's name anxiously, and tears began to flicker slightly in her beautiful eyes.

After a few accelerations, Mu Yun had already come to the side of the centaur beast, and she swept to the other party's back with a sigh of relief, and began to search for Xiao Hei's traces in all directions.

"Bang Bang!" A sound of wings flapping came from the front right, Mu Yun stared at it, and saw that Xiao Hei was using four dragon claws to fiercely grasp the beard under the forehead of the huge centaur beast, a dragon mouth biting the other party's neck artery, the huge head of the centaur beast was shaking desperately back and forth under the extreme pain, and Xiao Hei's pair of dragon wings kept flapping in the air to maintain the balance of the body.

A dark green liquid spilled from the corner of Black's mouth and flowed down the centaur beast's neck, emitting a pungent fishy smell that was disgusting.

"Ahem, ahem!" Mu Yun was choked and couldn't breathe, so he hurriedly opened the shield to block the unpleasant smell from his body, and only then did he ease up a little.

"Blackie, what are you doing?" Mu Yun looked at Xiao Hei, his face was full of pain, and his stomach was churning again, "Isn't it disgusting?" You're not a boy, are you okay? ”

Xiao Hei didn't reply, and he desperately tore at the wound between the neck of the centaur beast to speed up the flow of the dark green liquid.

"Whew!" The centaur beast roared again, this time closer, so the roar shook Mu Yun and Xiao Hei's ear drums with a tingling pain, "Woo! The centaur beast's huge palm suddenly slapped fiercely towards where Xiao Hei was.

"Blackie!" Mu Yun was so shocked that he shouted, "Get out of the way!" ”

Xiao Hei saw the giant hand attacking, but he seemed calm, the two hind paws kicked lightly on the neck of the giant beast, and the body suddenly jumped to its shoulder, but the dragon's mouth still bit the other party's major artery, tearing out a large section of the artery and exposing it outside.

"Smack!" A heavy muffled sound sounded in the neck of the giant beast, and the huge slap slapped hard at the place where Xiao Hei had bitten just now.

"Is it still an artery?" Mu Yun looked at the strip-shaped object in Xiao Hei's mouth in amazement, "It's just a giant rubber band, the toughness is so good!" ”