One Thousand Six Hundred and Twenty Detonation

Xiao Yuan followed the same method and solved the other shield insect, ending the battle here. His body was covered with insect blood and insect flesh, but he was grinning endlessly.

At the same time, the main force led by Ye Han was still fighting fiercely with the swarm of insects. The troops advanced hundreds of meters along the passage. However, more and more springtails came in. The pressure on the soldiers was increasing, and ammunition was also consumed. More than half.

It is impossible for the troops to fight all the way to the protective wall, let alone successfully install explosives. At this point, it can be concluded that this battle has failed to achieve its intended purpose.

In this case, it was the right decision to give up the battle and re-plan, or it was a good decision to retreat and shrink the defense. However, Ye Han had no intention of giving up and strictly ordered the troops to continue advancing.

Luo Qi and Ouyang Ping couldn't understand Ye Han's thoughts at all, but soldiers only had to execute orders on the battlefield. Even if the order was wrong, they had to execute it first.

In this way, the troops advanced another forty meters with difficulty. Another seven or eight meters would be the end of the corridor. If they moved forward any further, the soldiers would plunge into a pile of bugs and never take advantage of the corridor to resist the enemy.

A large group of giant insects were crowded there, trying their best to squeeze into the corridor. If all kinds of grenades hadn't been used up, Luo Qi would have bombed a few of them.

Not only are there bugs in front of it, but if you put your ear against the wall, you can hear an obvious digging sound. Even if you don't have a head, you will know that it is digging bugs digging into the wall. Therefore, even if the status quo is maintained, this advantage will not last long.

Just when everyone thought Ye Han was going to continue pushing forward, Ye Han called out on the radio to stop, then pointed at the wall and ordered Ouyang Ping: "Explode!"

Ouyang Ping didn't say a word. He directly used explosives to blow open the wall, revealing a room full of pipes and valves... In addition to the equipment, there was also a group of giant insects with snarling claws.

Ye Han, who had been prepared for a long time, waved in, several soldiers rushed in with the steel bars, all of which were like the mate who came out of the legendary story.

Ye Han walked in carrying the steel bar and killed the giant insect himself.

Ouyang Ping followed Ye Han in and looked around curiously. He didn't know why Ye Han was not allowed to shoot here. Then, his eyes fell on a set of pipes fixed on the ground. There was a sign prohibiting fireworks hanging on it. Sign.

Just when Ouyang Ping was in a daze, Ye Han and the soldiers had killed the last giant insect.

Ye Han walked to the valve in the middle of the room, let out a long breath and said: "Everyone pay attention, attack with all your strength, cease fire in half a minute, pay attention, I am talking about stopping any form of firing, everyone retreats to the maintenance channel as quickly as possible." ,Understand?"

"clear!"

"Very good!" Ye Han turned around to find Ouyang Ping, pointed at the valve and said, "Ouyang, time bomb, the kind that can be detonated remotely."

"Yes!" Ouyang Ping immediately complied. After he installed the explosives, he saw Ye Han using two fingers as a wrench and unhurriedly tightening the simple bolts.

Ouyang Ping's eyes went straight, what on earth is going on?

Half a minute passed quickly. Ye Han removed a section of the pipe and put it aside. As soon as the time was up, he ordered the troops to cease fire. The flood of gunfire suddenly stopped, and the soldiers ran back as if their buttocks were on fire.

At the same time, Ye Han struggled to open the valve, and Ouyang Ping immediately heard the hissing sound of air leakage, and the sound became louder and heavier.

Ouyang Ping shuddered violently, and he finally realized what was in the valve - it was gas, a flammable gas!

Ye Han turned the valve several times like a steering wheel, and then ran away like a rabbit with an arrow: "Get out, get out!"

The soldiers also blew up their nests and followed behind Ye Han like flying.

The two evacuating teams met in the corridor and quickly retreated the same way they came. A large group of bugs followed closely behind them, and it was not obvious that this team had just beaten the bugs to the point where they could not find their way around.

Ye Han ran back to the storage room in one breath, waving his hands continuously, and the soldiers struggled to push the large and small boxes, before the swarm of insects rushed over,

The warehouse door was blocked tightly.

That's not all. Ye Han ordered everyone to retreat to the maintenance channel and cover the exit disguised as the ceiling. Then he breathed a sigh of relief: "How long has it been?"

Ouyang Ping said: "Forty-seven seconds!"

"A bit short...just one more minute!"

Ouyang Ping asked curiously: "Captain, what does that valve release?"

Ye Han chuckled: "You don't know, right? I just learned that there is a coal mine under West Sixth Fourth. When the city was built, the rock formations were specially drilled to collect gas to provide fuel for West Sixth Four."

Luo Qi could hardly close his mouth after hearing this: "Is this okay?"

Ouyang Ping's reaction was much more intense: "No, this thing cannot explode once the concentration is high. It must be detonated immediately!"

At this point, he already understood Ye Han's idea, which was to open the valve to release the gas, and then detonate it after reaching a certain concentration. The effect was no different from that of a cloud bomb. Even if the bugs in the North Third District were not killed by the explosion, , will also suffocate due to the large amount of oxygen consumed by the explosion.

"Hurry up then." Ye Han followed suit.

Ouyang Ping immediately sent out the detonation signal, but after waiting for a few seconds, there was no sign of an explosion, no loud noise, and no vibration.

Ye Han's expression froze: "What's going on?"

"I don't know!" Ouyang Ping panicked and sent out several signals in succession, but still got no response.

Luo Qi asked: "Is the concentration too high?"

Ye Han shook his head: "Whether the concentration is high or not, there should be a sound when the time bomb is detonated, right?"

Ouyang Ping said hesitantly: "Or... I'll go out and take a look?"

"No need." Ye Han said, "Is it too late now?"

"Yes!" Ouyang Ping nodded, "It should be that the gas concentration exceeds the standard."

The lower explosion limit of gas is 5.3%, and the upper limit is 15%.

Ye Han frowned: "What will happen if it exceeds the standard?"

Ouyang Ping said: "It will burn when it encounters fire, but I have never seen how it burns."

Ye Han gritted his teeth: "Open the door, send another signal!"

Several soldiers immediately opened the covered exit, and Luo Qi immediately shouted: "Combustible gas is found, the concentration is 7%!"

Ye Han shouted impatiently: "Quick!"

Ouyang Ping quickly sent out the detonation signal, and a faint explosion came from the storage room.

The soldiers who opened the door quickly covered the exit. Before they let go, a huge force suddenly came from below, and the heavy lid was lifted up and hit the soldiers heavily. Then a flame rushed into the maintenance passage. Soldiers near the exit were either knocked over by the lid or blown down by the airflow.

The explosion came and went quickly, and the flames that rushed into the maintenance passage quickly subsided. Ye Han shook his head and climbed up, shouting at the top of his voice: "What's going on? Is there anything wrong?"