Hua Yulang and his soldiers were stunned by the current situation. Of course, they didn't think much about the strangeness of these black cigarettes. In their current situation, they didn't have time to think about the strangeness of these cigarettes!

Different from those confused enemies below, long Tianci and others took out a handkerchief from their arms after the black smoke filled the air, and then wetted the handkerchief to block their faces. Then all the archers stopped shooting and looked coldly at the enemy covered by thick smoke below. Everyone's eyes showed a strange sneer.

Trapped in the thick smoke, Hua Yulang shouted to his men not to panic, but after a few words, Hua Yulang felt that his body was abnormal. A strong sense of dizziness suddenly appeared, and his limbs became heavy. Moreover, Hua Yulang also felt waves of nausea. The sudden abnormal state surprised Hua Yulang, Then suddenly, as if aware of something, he shouted, "everyone hold your breath and don't breathe in black smoke!"

Although Hua Yulang realized that there was something wrong with the black smoke, it was too late. A large number of soldiers around Hua Yulang fainted directly to the ground. Hua Yulang was shocked when he looked at his men who kept falling to the ground. He couldn't figure out what had happened? What's the matter with these black smoke? Why does inhaling these black smoke make people unconscious?

With doubts, Hua Yulang gradually couldn't hold on. Although he stopped breathing when he found that the situation was wrong and didn't inhale black smoke, he inhaled a lot before. With his strong strength, he insisted for a long time, but it also made the toxin in his body completely spread all over his body. In front of this neurotoxin, No matter how strong you are, you can't hold on. As a result, Hua Yulang fainted. Before he completely lost consciousness, he heard dragon Tianci say: "well, the situation is reversed, and it's time for us to fight back!"

Long Tianci's plan has been premeditated for a long time. Of course, the last means is conditional, that is, the enemy can only start after breaking through the valley mouth and entering the valley.

These barrels contain all the extracts from salivating grass roots and stems. They are a terrible neurotoxin. Although the poisoned people will not die, they will feel weak hands and feet, and the whole body will be weak. If they inhale too much, they will even faint. Cao Youyi prepared much more than the inventory in the cave, but the enemy sneaked in here and detonated about half of them, That's all that's left.

Because the storage capacity is not large, the effect of using this neurotoxin in an open place during a frontal confrontation will not be very good. Therefore, this neurotoxin originally intended to be stored as a sharp weapon of war has become the last mace for defense!

Different from the wide plain outside the canyon, the canyon is surrounded by mountains and the outlet is not large, which leads to the weak air flow in the canyon. Once the toxin volatilizes into gas and spreads out, it will gather in the canyon for a long time, and almost all the enemy troops have rushed into the Canyon. At this time, the effect of releasing toxic smoke is the best!

With the burning of the fire in the cave, all the wooden barrels were ignited and burst. After that, the volatile super neurotoxin in it vaporized at high temperature and flew out along the cracks on the top of the cave.

The prince in the canyon anxiously waited for Hua Yulang's news, but there was no result. Just when the guy was anxious, a soldier suddenly ran in, got up out of breath and said, "Your Highness! No! Something's wrong!"

"What happened? What happened?" the prince was stunned when he saw the soldier's state, and then asked nervously.

"The 50000 people led by the military division seemed to have been ambushed. A lot of black smoke came out from the dug cracks. The black smoke was very smelly. It would make people faint and paralyzed as long as inhaled. Now more than 100000 people close to the crack were recruited. The smoke is still spreading and will soon cover the whole Canyon!" the soldier gasped and replied!

The crown prince is stupid when he hears this. It's too evil. Does the other party still have such means? What's that black smoke? Why does inhalation make people faint and paralyzed? Is it poisonous smoke?

Just when the prince was stunned, the soldier shouted anxiously again: "Your Highness! What should we do now? If it goes on like this, the whole army will be destroyed!"

The soldier's cry woke the prince from his stupor. Then the prince rushed out of the camp and looked in the direction of the crack. As reported by the soldiers, a large amount of smoke gushed out of those cracks. Many soldiers were running around with their mouths and noses covered. However, more soldiers had been paralyzed on the ground, and some were even unconscious!

The strong black smoke gathered in the sky, and then spread slowly. From a distance, it was like a huge black demon attacking in the sky. The prince opened his mouth and the whole person was stupid. He was at a loss!

"Your Highness! Your highness! What should I do? Give orders quickly!" the soldiers around me were stunned when they saw the prince again. They just shouted loudly!

"Ah? Oh ~! Order the whole army to withdraw from the Canyon! Withdraw quickly!" the prince heard the cry and finally returned to normal, and then began to give orders loudly.

"What about the comatose soldiers?" the soldiers who heard the prince's order frowned. Obviously, the prince's mindless order had not been carefully considered and withdrew? How? What about the soldiers who were stun by the black smoke?

"Who cares about them? Let those who can move move move quickly. Don't worry about these cumbersome things! Go!" the prince had turned over and got on the horse and urged the horse to turn around. After he whipped the horse's ass with a whip, the horse under the crown prince's crotch rushed out with the crown prince, and the crown prince left without turning back!

The crown prince, the supreme commander of the army, ran away. How can those soldiers who can still move stay here? It's just the so-called tree falling and monkeys scattered. Without the leader, the Imperial Army Hula all rushed to the canyon mouth. Unfortunately, the inner side of the canyon mouth is not very wide. It can exceed more than 100 people at most once. This is good, Hundreds of thousands of troops crowded here and blocked the exit completely!

The chaos lasted about an hour before it ended. The remaining 220000 people of the enemy quickly withdrew from the canyon, while the remaining 100000 people were all trapped in the canyon. These people were either unconscious or paralyzed by neurotoxins. While the enemy withdrew from the canyon, the huge broken dragon stone slowly rose and the underground army swarmed out, Tied up all the enemies who were still alive but could not move. So far, the war had an unexpected outcome after a series of dramatic processes. The underground army that had been suppressed or even broke into the city finally won, and even captured nearly 200000 enemy troops. This was a big victory!