Subconsciously, he glanced towards the artillery camp!
In front of the artillery camp, where those cavalry had charged!
The earth kicked up by the hooves was noticeably wrong!
It was gray!
This is bad!
Goguryeo had buried gunpowder underground!
Fang Er’s heart filled with dread!
Retreat! Quickly retreat!
He mounted his horse and shouted towards the artillery camp.
Tie Lao Ba couldn’t hear him at all!
The continuous bombardment had already made his ears somewhat deaf!
Seeing Fang Er’s anxious expression, Guan Dao rushed to the artillery formation, grabbed Tie Lao Ba, and shouted in his ear, "My Lord says to retreat! Quickly retreat!"
Tie Lao Ba turned his head and saw Fang Er looking with fear at a spot twenty paces in front of the artillery camp!
The ground there was distinctly different!
Tie Lao Ba instantly recognized it as gunpowder!
A rocket fell, igniting the gunpowder!
Then, from twenty paces away, it instantly spread towards the artillery camp!
Explosions erupted one after another, raising a sky full of flames and dust.
Tie Lao Ba grabbed the artillerymen beside him: "All of you, retreat quickly!"
The three hundred artillerymen, along with the Sky Fire units and the New Firearm Army firing nearby, also scrambled backward!
There was no time to take the mortars on the ground!
Nor those crates of artillery shells!
Just as the army retreated a few dozen paces, they heard earth-shattering explosions from behind them!
One explosion followed another!
Then came the massive blast wave!
The Tang army was like wheat blown by the wind!
They were thrown to the ground in disarray!
From the city walls, King Rongliu watched the explosions, his long-held anxiety finally easing.
Outside the city!
From four hundred fifty to five hundred fifty paces!
A full hundred paces underground!
Countless gunpowder charges had been buried!
Hahahaha!
King Rongliu burst into laughter!
The officials behind him were filled with shock!
They only knew that King Rongliu had sent people to bury gunpowder outside the city.
But they never knew that so much gunpowder had been buried!
And, by sheer coincidence, right where the Tang army had placed their artillery!
"My King, how did you know the Tang army would place their artillery there?" a civil official asked.
"Sun Zheng Yi reminded me!"
"It's a confirmed fact that the Tang army's artillery can strike at four hundred paces."
"When they come to attack the city, they will definitely choose the West Gate."
"Similarly, the city gate will be their first target."
"Therefore, from the city gate, the area within about four hundred paces to the east is where their artillery formation will be."
"Since the gunpowder within the city cannot affect the Tang army, I ordered my men to bury all the gunpowder underground within that hundred-pace radius!"
King Rongliu was very proud.
"The Great Tang's artillery is indeed impressive!"
"I truly cannot hit you from within the city."
"But don't forget, this is my territory!"
"What are you still standing here for? Quickly lead your troops out of the city! Kill all these Tang bandits for me!"
King Rongliu glared at the few remaining generals beside him.
"Such a good opportunity, and you don't take the initiative?"
"Do I keep you here to watch the show?!"
The generals exchanged glances, then quickly descended the city walls to muster their troops.
Outside the city!
Fang Er shook his dazed head!
He looked around.
Countless soldiers were engulfed in flames, their fate unknown!
He then looked at the original location of the artillery formation!
The ground had sunk a foot deep!
Across an area as large as a football field!
Fang Er’s throat felt tight, and he spat out a breath of anger!
"Get up!"
"All of you, get up!"
He never imagined that Goguryeo could pull off such a move!
"My Lord, My Lord, are you alright?"
Tie Lao Ba suddenly sat up from the ground and rushed over to Fang Er, who was kneeling on the ground, asking.
"I'm fine, go check on our brothers!"
"My Lord!"
"My Lord!"
"Is My Lord alright?"
At this moment, soldiers started to get up from the ground, looking around.
Seeing this, Fang Er’s heart ached immensely!
The moment these soldiers woke up, their first question was whether he was alright!
But what had he done!
He had led them into a deadly situation without realizing it!
Suddenly!
The sound of galloping horses was heard again from the direction of Pyongyang City!
Fang Er looked up!
Countless cavalry were surging towards them!
"Brother! Brother!"
Cheng Yaojin anxiously searched for Fang Er in the crowd.
Goguryeo's gunpowder was only buried near the artillery positions.
Therefore, the Tang army's left and right flanks were not affected.
They were merely affected by the blast wave.
But the earth-shattering explosions had scared them out of their wits!
After the explosions stopped, they all charged towards them.
They turned over the fallen musketeers and artillerymen, checking if they were alive.
"Brother!"
Cheng Yaojin searched for a while before spotting Fang Er, who looked bewildered.
"Brother Cheng, quickly! Goguryeo's cavalry is charging out, go!"
Fang Er pointed towards Pyongyang and shouted at Cheng Yaojin.
Chai Shao saw the Goguryeo cavalry as he approached.
"Hold them for me!"
Fang Er's fate was unknown, and now Goguryeo was pursuing them. The disparity in numbers made him feel somewhat helpless!
The remaining thirty mortars were all gathered together.
The five thousand musketeers who had originally guarded the flanks also gathered together, closely protecting Fang Er and the others behind them.