At 100 years old, he joined the army in place of his granddaughter, and became a national war god.

The city gates were wide open.

A snow-white steed galloped out of the city gate.

On horseback, the white-haired Su Mu lowered his body, holding the Dragon-Slaying Saber in his right hand, and walked towards the battlefield.

[Ding! The system's main quest has been issued. Please check it now!]

Su Mu was stunned.

A system task at this critical juncture?

And he has to check it now?

Does this mean he needs to complete this task right now?

So, taking advantage of the brief time, Su Mu entered the system and accepted the mission.

[Ding! Host has successfully accepted the mission!]

[Main Quest: Slay four fierce generals of the Northern Barbarians and take the head of their king, Tuoba Feng, to achieve true legendary status in a single battle!]

[Mission Rewards: 10 years of reverse aging, 200 days of lifespan, max-level Wudang Cloud Ladder Leap, and one Loyalty Card!]

Su Mu didn't have time to consider the mission rewards before leaving the system and focusing his attention on the battlefield.

……

After his defeat, Qin Hao clutched his chest, his face pale, and was helped back to the city gate by two soldiers.

There was still blood on the corner of his mouth, and a dent in the armor on his chest.

That was the spot where Timur's hammer blast struck.

He endured the excruciating pain and shouted to Su Mu:

"Old Su, be careful! This Timur is incredibly strong. His hammer weighs at least a hundred pounds. One blow from him can be devastating."

Su Mu nodded slightly.

"I understand. You should step back and recuperate. Have the 5,000 vanguard battalion in the city prepare to charge with me at any time."

Qin Hao was taken aback for a moment, then a glint flashed in his eyes, and he clasped his hands in a fist and said, "This subordinate obeys!"

He was helped back into the city and ordered the messenger to gather the rest of the vanguard soldiers.

Su Mu, riding his Ferghana horse, stared intently at Temur.

Timur stood on his horse, his two hammers raised high, his face full of fierce features, and his large, copper-bell-shaped eyes filled with disdain.

He looked Su Mu up and down and sneered.

"Old man Su Mu, you've finally come out! I thought you were going to hide behind the city walls like a coward for the rest of your life!"

He raised the heavy hammer, its head gleaming coldly in the sunlight.

"I'll take you down with one blow, and then I'll get promoted and ennobled!"

"The king said, if I cut off your head, I'll be granted the title of Marquis of Ten Thousand Households and a reward of ten thousand taels of gold! I'm in luck today, this credit is mine!"

Su Mu responded dismissively:

"Want to kill this old man? You'll have to see what you're made of."

"However, in my humble opinion, you alone are not qualified."

Timur's face flushed red, and the veins on his forehead bulged.

He was thoroughly enraged by those words. With a roar, he clashed his two hammers together with a loud clang, sparks flying everywhere.

"You old codger, you've got a tough tongue! I'll show you what real power is today!"

He spurred his horse, and the warhorse neighed loudly, charging towards Su Mu like a moving mountain.

The hammers swung in the air, creating a howling wind that whipped up snowflakes from the ground, scattering them in the wind.

Within the Northern Barbarian ranks, war drums thundered and horns blared.

"Thump! Thump! Thump!"

The 100,000-strong army shouted in unison, their voices like a mountain collapsing and a tsunami crashing.

"General Temujin is mighty!"

"Slay Su Mu! Flatten the Northern Border!"

The Northern Di King Tuoba Feng sat on his horse, gripping the reins tightly with both hands, his eyes fixed on the battlefield.

A confident smile played on his lips as he turned to look at Gore.

"Senior Ge Lie, look at General Temu's hammer blow, that old man and his horse will probably be crushed to death."

Gore remained silent.

He gripped the iron spear, his gaze sharp as a hawk's, watching Su Mu's every move.

His intuition told him that things weren't that simple.

……

On the battlefield, the distance between the two horses was rapidly decreasing.

In a head-on confrontation.

Timur roared and raised his right hammer high, bringing it down towards Su Mu's head with a whistling sound.

That hammer blow contained all the strength he had ever exerted, weighing at least a thousand pounds.

Wherever the hammer wind passed, the air seemed to be torn apart, emitting a sharp whistling sound.

Su Mu did not dodge.

The Dragon-Slaying Saber was swiftly raised.

Knife and hammer clashed.

"clang!!!"

A deafening roar, like a thunderclap, made the eardrums of soldiers within a radius of a hundred feet ache.

Sparks flew everywhere, particularly glaring in the hazy skylight.

Timur's smile froze.

He felt an overwhelming force emanating from Su Mu's sword. This was no ordinary force; it was an irresistible force, like a mountain collapsing.

His right arm suddenly sank, and he felt a sharp pain in his hand; the hammer almost flew out of his grasp.

His warhorse let out a mournful neigh, its front legs buckled, and it knelt on the ground with a thud.

The horse's leg bones couldn't withstand the enormous impact, and it immediately collapsed to its knees.

Timur's body lurched forward, nearly causing him to fall off his horse.

He instinctively gripped the horse's back with his legs, holding on tightly.

He looked up at the white-haired, hunched old man in front of him, at his withered but motionless hands, at his trembling, buzzing broadsword, and his mind went blank.

"This...how is this possible?"

His voice was trembling, filled with disbelief.

"You...you're a centenarian, where do you get such strength?"

Su Mu pulled on the reins, and the Akhal-Teke horse reared up, coming to a steady stop in front of Timur.

He lowered his head, looked at Timur's pale face, and a slight smile appeared on his lips.

"You're still too green to compete with this old man in strength."

Suddenly, the entire room fell into a deathly silence.

The thunderous war drums of the Northern Di army fell silent at this moment.

They stared blankly at his kneeling warhorse, at Timur who had almost been knocked off, and at the white-haired Su Mu.

"General Temujin...knelt down?"

"One strike...one strike and General Temu was dead..."

"Is that old man even human?"

Hurchi's pupils suddenly shrank to pinpoints, and a chill ran down his spine.

His hand holding the bow trembled slightly; he was utterly shocked.

Timur's strength ranked first among the Northern Barbarians, unmatched by anyone.

But in front of Su Mu, he couldn't even withstand a single blow.

What kind of power is this?

Monlik's brows furrowed, and he gripped his spear, muttering, "This centenarian's strength is no less than General Tiemu's, and perhaps even greater."

Tuoba Feng's face turned ashen, and his smile froze.

He suddenly turned his head to look at Gore and the others.

"This...this old man..."

Gore remained silent.

His eyes were fixed on Su Mu, his grip on the iron spear.

He finally understood why the barbarian had died at the hands of this old man.

It wasn't that the barbarian was too weak; it was that this old man was no ordinary person.

A cold glint flashed in Ge Lie's eyes as he murmured to himself.

"Su Mu... truly lives up to his reputation."

……

On the city wall, the soldiers of Daqian were stunned at first, and then burst into a deafening cheer.

"Old Su is awesome!"

"One slash and that big guy was knocked to his knees!"

"What kind of strongest man in the Northern Barbarians? He's nothing but a fart in front of Elder Su!"

Zhou Huchen slammed his fist on the battlement in excitement, his voice trembling with emotion.

"Old Su's strike was so damn satisfying! That Timur was so arrogant just now, now he's kneeling on the ground like a dog!"

Yu Zhongyi's eyes were full of admiration as he whispered, "The power of Elder Su's strike was terrifying."

Gu Changfeng nodded and took a deep breath.

"Old Su... truly is a god of war."

……

On the battlefield, Su Mu rode his Ferghana horse, looking down at Timur kneeling on the ground, his Dragon-Slaying Saber still pressing down on Timur's iron hammer.

"Didn't you say you'd take down this old man with one blow?" His voice was hoarse and mocking. "Come on, try again."

After saying that, he actually released his long sword, turned his horse around, and retreated a hundred paces.

Timur's face was pale, his lips trembled, and he wanted to curse a few words to bolster his courage, but when he looked into Su Mu's cold eyes, he swallowed the words back.

He struggled to stand up from his kneeling horse, then pulled hard, lifting the horse off the ground.

At this moment, the warhorse's legs were still weak.

"You...you..."

Su Mu ignored him and launched another attack.

With his next strike, Su Mu unleashed another powerful gravity attack.

Timur gritted his teeth, dragged his hammer, and resisted once more.

This strike knocked him off his horse.

The warhorse's forelegs could not withstand the weight and it collapsed on the battlefield, its four legs twitching, unable to stand up again.

The Northern Barbarian army was deathly silent.

"Generals, hurry and go help General Tie!"

Before the Grand Preceptor Xuan Ce could ask for the King's orders, he turned to the three generals beside him and spoke.

Monlik and Jamukha exchanged a glance, and then immediately made a decision.

"Wow!"

Monlik brandished his spear, slapped it on the horse's rump, and charged toward Su Mu.