Moments later, the sound of enormous wings flapping echoed through the air. Nearly a million Cold family's Hai Dong Qing soared into the sky above the battlefield, heading towards the Heavenly clan's main camp.
Each Hai Dong Qing carried a lord-level elite from the Seventh Army Group in its talons.
The Cold family's Hai Dong Qing were already异种 (yi zhong), a special breed. After such long-term cultivation, each Hai Dong Qing had become a lord-level spirit beast. For these million lord-level Hai Dong Qing, Leng Shan had shamelessly used Bai Qing's dowry.
It was worth noting that formation masters were a rare and promising profession among humans.
Leng Shan directly flew onto an emperor-level Hai Dong Qing, leading the flock towards the Heavenly clan's main camp.
Upon seeing the flock of Hai Dong Qing in the sky, Jiang Zheng hurriedly shouted, "Accelerate! Charge directly into their formation!"
As Jiang Zheng's voice faded, wolf howls erupted. The human Golden Wolf Cavalry directly charged into the battlefield, rapidly assisting Wang Er Zhuang in clearing out the remnants of the Heavenly clan's Fifth Army Group.
"Er Zhuang, my boy, lead your men straight through. Don't get bogged down in prolonged battles. The Marshal's Executioner Guard is right behind us," Zhebie shouted to Wang Er Zhuang while felling Heavenly clan soldiers.
Wang Er Zhuang was stunned. "Holy hell, those monsters are here. Even if we let these Heavenly clan remnants go, they won't survive."
"Issue an order: the Underworld Army's Third Army Group will follow General Jiang directly into the Heavenly clan's main camp. The Stone Army will remain to clear out the stragglers. Everyone else follows the Third Army Group. Quickly, quickly!" Wang Er Zhuang roared anxiously.
There was no other choice. The Heavenly clan's main camp still housed three main combat army groups and the Heavenly Yue Army Group. Even with Jiang Zheng's two army groups and Leng Shan's assistance, they couldn't breach the main camp.
As soon as everyone made a move, they felt a chilling dread emanating from behind.
Turning their heads, they saw figures clad in black armor, riding on Underworld Nightmares whose hooves burned with netherflame.
Each black-armored knight wielded a two-meter-long blood-red saber held aloft. Wherever they passed, no enemy was left intact.
The commander of the Executioner Guard, lifting his helmet, revealed a pale face. He addressed Wang Er Zhuang and the others, "Generals, the remaining enemies have been cleared. The Marshal has ordered that after breaking through the Heavenly clan's main camp, we are to pursue the enemy for a hundred li and then establish a fortified camp at our current position."
Jiang Zheng accepted the token and nodded to the arriving Wang Er Zhuang, saying, "The two brothers from the underground tunnels have successfully slain the commanders of the Heavenly clan's Twelfth Army Group. We can now launch the general offensive."
Following this, the Great Emperors exchanged nods, rose in unison, and transformed into afterimages, charging towards the Heavenly clan's main camp.
After several thunderous roars, the defensive formations of the Heavenly clan's main camp were breached by a few individuals. The assembled soldiers of various army groups, led by a host of Great Emperors, launched a massacre upon the Heavenly clan's forces.
Leng Shan even unleashed the five million mad dogs brought by the million strong force into the Heavenly clan's main camp, causing a cacophony of shrill screams.
In army groups lacking Great Emperors or those of Emperor rank to defend them, facing an army led by Great Emperors was a one-sided affair.
After all, no matter how strong the defenses, they were like foam against the combined assault of several Great Emperors.
"My brothers, let some of the wounded go. Don't kill them all," Leng Shan said to a few individuals while directing his subordinate mastiffs.
The slaughter lasted for an entire night, continuing until the next morning when He Da Zhuang and the others finally called off the pursuit.
Following Lin Zhan's orders, they had pursued for a hundred li. Of the fifty million elite Heavenly clan forces, less than a tenth had escaped, and those were mostly injured by the Seventh Army Group's mad dogs.
The Heavenly Yue Army Group, one of the Heavenly clan's ten elite army groups, received particularly harsh treatment.
Led by the Executioner Guard personally, and with elites from other major army groups participating, they finally annihilated the entire Heavenly Yue Army Group.
What was truly admirable was that out of the nearly twelve million men in the Heavenly Yue Army Group, not a single one surrendered; all perished in battle.
After the complete annihilation of these five Heavenly clan army groups, the human Second and Sixth Army Groups suffered thirty percent casualties.
All five million mad dogs of the Seventh Army Group were annihilated, and nearly five hundred thousand of the Cold family's mastiffs also perished.
He Da Zhuang, leading the Ninth Army Group that had come to reinforce, also sustained nearly a million casualties.
The Underground Underworld Army's Third Army Group suffered more than half casualties, with its commander severely wounded. The Fifth Army Group had a forty percent casualty rate.
Even with the initial surprise attack and the assistance of the Iron family brothers who had eliminated six Heavenly clan Great Emperors, the combined human and underground forces still sustained such heavy losses. The combat effectiveness of the Heavenly clan army could indeed not be underestimated.
"Damn it, with such a massive advantage, even if we were fighting a ten-times larger force from the myriad races, we wouldn't have such heavy casualties. These Heavenly clan soldiers are truly formidable," Wang Er Zhuang spat and cursed.
Jiang Zheng said with a grim expression, "Including our brothers from the underground, we've lost seventeen million. Old Leng lost over six million mastiffs. If Old Lin hadn't sent the Executioner Guard, our casualties would have been even higher."
"Even with our Great Emperors engaging the Heavenly clan army, their forces could still inflict a 2 to 1 casualty ratio on us. It's truly disheartening."
The two commanders from the underground also nodded with grim expressions. It was unavoidable, as their forces had suffered the most severe casualties.
It wasn't that the underground's two army groups lacked strength, but rather that the soldiers' cooperation was inferior to that of the humans.
These human soldiers all understood how to cooperate, to block blades for their comrades, to trade injuries for lives, and to protect their fellow soldiers.
However, the underground soldiers didn't operate that way. They knew how to form formations and follow orders, but once a melee ensued, they fought recklessly, solely focused on plunging their blades into the enemy's bodies.
Especially the Third Army Group commander, who was severely wounded by a final stab from the Heavenly clan's Ninth Army Group commander, which was truly regrettable.
"Third Brother, can you still hold on? If you can't, let Old Leng's Hai Dong Qing take you back to recuperate," Wang Er Zhuang said, offering a pill to the Third Army Group commander.
"Take this. It was refined by the Great Emperors of the Shen Nong clan's Medicine Clan. It's incredibly effective for saving lives."
The Third Army Group commander quickly waved his hand. "This is too precious, brother. Third Brother won't die from this injury."
The Great Emperor-level pills from the Shen Nong Medicine Clan were priceless throughout the heavens. They could even revive a Great Emperor who was on the brink of death.
Although the Third Army Group commander was severely injured, he was not yet on the verge of death, so he was reluctant to part with this precious elixir.
"Take it, Third Brother. We have connections within the Shen Nong clan. Our sister now manages all major and minor affairs of the Shen Nong Medicine Clan. When the opportunity arises, I'll get more for both of you brothers. On this damned battlefield, having a few pills to save your life truly brings peace of mind."