After the defeat in the valley, Wu An did not march again for a long time.
The army expected anger.
They expected executions.
They expected another reckless attack to recover honor.
Instead, Wu An did something far more frightening.
He reorganized.
Units were broken apart and rebuilt. Officers were reassigned. Supply lines were rewritten. Scouts were replaced in entire groups, not individually. Messenger routes changed every three days. Artillery units were split into smaller mobile batteries instead of large formations.
To the soldiers, it felt like the army itself was being taken apart and rebuilt into something new.
Liao Yun understood what Wu An was doing.
"You're not preparing for a battle," Liao Yun said one night.
Wu An shook his head.
"I'm preparing for a war that has no front line."
He placed a stone on the map — not on a city, not on an army, but between the coalition camps.
"We only need to win once," Wu An said quietly. "One major battle. One that destroys Northern Zhou."
"And the rest of them?" Shen Yue asked.
Wu An looked at the map where the banners of Wei, Chu, Jin, and Northern Zhou were all positioned within marching distance of each other — close enough to cooperate, far enough to distrust.
"They don't trust each other," Wu An said. "So we make sure they trust each other even less."
The attacks began small.
A Wei grain convoy burned in the night — the survivors swore they saw Chu soldiers fleeing the scene.
A Chu officer was assassinated in his tent — the dagger used was the style commonly used by Jin canal troops.
A Jin supply depot was sabotaged — witnesses claimed they saw Wei soldiers arguing with the guards earlier that evening.
Zhou messengers began disappearing.
Wei engineers were killed while repairing a road — Zhao cavalry arrows were found at the scene.
But Zhao had not been seen anywhere near the area.
Every incident was small.
But there were many incidents.
Too many incidents.
And every incident seemed to point to a different ally.
Inside the coalition camps, arguments began.
Wei accused Chu of attacking their grain.
Chu accused Jin of sabotaging supply lines.
Jin accused Zhou officers of staging incidents to gain more command power.
Officers began sleeping with guards inside their own tents.
Supply convoys began traveling with double escorts — which slowed the entire army.
Messengers were no longer trusted unless they carried three different seals.
Every order was questioned.
Every delay was blamed on someone else.
The coalition still marched.
But now it marched like a man walking through mud while looking over his shoulder.
One night, General Pei received three reports at the same time.
A Wei supply convoy destroyed.
A Chu officer assassinated.
A Jin canal depot burned.
Pei read all three reports without speaking.
One of his officers slammed his fist on the table. "They're turning on each other! The alliance is breaking!"
Pei shook his head slowly.
"No," he said.
"This is too clean."
He placed the three reports side by side.
"Each attack is small. Each attack creates suspicion. Each attack slows the army without starting a real war."
He looked up at his officers.
"This is not Chu."
"This is not Wei."
"This is not Jin."
One of the officers swallowed. "Then… who?"
Pei did not answer immediately.
He walked outside the tent and looked south, toward where Liang forces were last reported.
Then he smiled slightly.
"Wu An," he said.
The next day, Pei sent messengers to Wei, Chu, and Jin commanders.
The message was simple:
"These attacks are not from each other.
They are from Liang.
Wu An is trying to divide us."
Some believed him.
Some did not.
Because even if Wu An was responsible…
The distrust was already real.
And once distrust begins, it does not disappear just because someone explains it.
Wei still moved its grain under heavy guard.
Chu still kept its navy separate from the others.
Jin still kept control of the canals and refused full access to the coalition.
The alliance still existed.
But now it existed like a table with cracked legs.
Still standing.
But unstable.
Back in the Liang camp, Wu An received reports of each successful sabotage quietly.
He did not celebrate.
He did not smile.
He only asked one question each time.
"Are they still marching together?"
Liao Yun answered, "Yes. But slower. And they no longer share camps."
Wu An nodded.
"Good," he said. "Then we continue."
Shen Yue looked at him for a long moment before speaking.
"This war is starting to look like you," she said quietly.
Wu An did not ask what she meant.
Because he understood.
This was no longer a war of banners and drums.
This was a war of suspicion, fear, hunger, and exhaustion.
A war where armies died without seeing the enemy.
A war where allies began to hate each other more than the man they were supposed to fight.
A war where the goal was not to win battles.
But to make sure that when the final battle came…
The enemy would already be half-defeated.
Wu An looked north again, toward the coalition, toward General Pei.
"Be patient," Wu An said quietly, as if speaking to Pei across the distance between them.
"Sooner or later, you will have to fight me alone."
Far to the north, General Pei stood in the cold wind outside his command tent, watching the coalition camps scattered across the plains — each army keeping distance from the others, each banner flying alone.
He knew exactly what Wu An was doing.
And he also knew something else.
Wu An was not trying to defeat the coalition.
Wu An was trying to isolate him.
Pei smiled slightly in the dark.
"Good," he said softly.
Because General Pei had come to the same conclusion as Wu An.
This war would not be decided by Wei.
Or Chu.
Or Jin.
Or any alliance.
This war would be decided by one battle.
Between two men.
And both of them were now doing everything they could to make sure that when that battle came—
They would be the one still standing.