After Zhang Fulai's apprentice went out to deliver the message, Tie Yi checked the two big coffins again, and looked at every corner very carefully, I have to say that the coffin shop in Gaoyao City has done a good job, and the joints of the two coffins have been waterproofed, and they have been dragging on the tunnel for so long, except for being covered with muddy water, there is no water seeping into it at all.

Tie Yi, who was relieved, gently patted the coffin on the left, and suddenly thought of Master Zheng Laoquan, thinking that he didn't even have a coffin when the old man died, and his nose couldn't help but be sour.

If God takes care of me this time and doesn't let me die in this tunnel, he must go back and buy a good coffin to rebury Master and his old man!

Tie Yi made an oath in his heart, and then took a deep breath, the air in the tunnel was thin, and the deeper he went, the more difficult it was to breathe.

After taking a deep breath of air, Tie Yi felt a lot refreshed in his head, so he carefully took out the fire rope wrapped in kraft paper from his arms, and there were many wooden stakes less than a foot apart on the dirt wall on the left side of the tunnel, he only needed to put the fire rope into the coffin, and then put it on those wooden stakes in sections, and finally light the fire.

This process does not allow for a little carelessness, once the fire rope falls on the muddy floor full of water, needless to say, the fire is difficult, and the soil on the wall cannot be allowed to fall onto the rope, otherwise, the rope will be smashed to the ground, which is also a loss on the side.

The fire rope used for ignition is made of hemp rope, about 100 feet long, and is connected by more than a dozen fire ropes. This kind of fire rope should be soaked in vinegar for a few days after being made, and then taken out to dry, otherwise the stability and flotting are very poor. After soaking in vinegar, the fire rope can burn on its own, but the disadvantage is that it burns faster and is not safe, so it catches fire when it encounters fire. When I buried medicine in the mine. Tie Yi had seen someone die on the mountain because he didn't have time to run over the lighted arquebus.

The hundred-foot-long fire rope meant that Tie Yi had to escape to safety in a very short time, because there had never been a real blasting of the city wall before. Therefore, even Zhou Shixiang couldn't tell how powerful the two coffins would be after they exploded, and how long the tunnels would be affected. Therefore, he repeatedly told Tie Yi to turn around and run to the exit as soon as the fire was ignited, and not to stay there to try to check whether the fire rope continued to burn.

People are afraid of death, and Tie Yi is the same, he is also afraid of being buried alive in the ground, but someone must light the fire, as a hundred households in the trapped camp, Tie Yi thinks that this fire rope must be lit by his own hands. If you want to die, you should die him.

The time for placing the fire rope is almost static, the deep underground black hole is a little scary, the torches inserted in the wall at intervals cannot illuminate enough places because of the thin air, and Tie Yi does not dare to pull the fire rope with the torch, so he can only cheer up twelve points of spirit, and even breathe in the breath to do this fatal thing.

Finally, the firerope was safely erected on the wooden stake on the wall, and there was nothing Tie Yi feared.

Looking at the two coffins that could no longer be seen clearly a hundred feet in front of him, Tie Yi swallowed his saliva. Nervously looking at the arquebus hanging from the stake, he slowly stepped back and pulled the torch from the wall. Get ready to light it with your own hands.

The fire rope was made by Tie Yi and a few old people, and the coffin was also built with his own eyes, and he personally commanded people to drag it into the tunnel.

Explode!

Blow up you dogs!

After shooting one last glimpse towards the end of the tunnel, Tie Yi didn't hesitate to stretch out the torch towards the firerope.

"Phew!" Suddenly, the spark flickered, and a faint green smoke rose up. The arquebus burned forward at a breakneck speed.

Thinking of Zhou Shixiang's advice, Tie Yi didn't dare to look at the burning of the fire rope at all. He turned around and ran as fast as he could, making one heavy footprint after another on his legs in the muddy tunnel.

All the way. I don't know how many torches stuck in the wall I knocked over, I don't know how many times my head hit, and I don't know how far I ran suddenly, anyway, Tie Yi has been running, running!

Dog's day, why hasn't it been fried yet?

The two feet were still running forward, but there was no explosion in his ears, Tie Yi's heart couldn't help but pinch up, and just as he was thinking, he suddenly heard a muffled sound behind him, and then the ground under his feet shook violently, and a heat wave hit him from behind, knocking him to the ground.

Accompanied by the heat wave were countless dirt and fragments, the tunnel felt like the ground was shaking, Tie Yi was lying on the mud, his head was thickly wrapped in mud, and the strong airflow just now also made him unable to breathe in an instant, and when he wanted to inhale, the air was full of choking gunpowder smell, choking his tears and snot came out.

Exploded!

Tie Yi's first thought was that it finally exploded, but the second thought was that I couldn't breathe, am I going to die here?

Filled with most of the belongings of the trapped camp, more than 700 pounds of granular gunpowder finally exploded in the sealed coffin, and the earth under the Xinhui city wall in the direction where the coffin was located was first lifted up, followed by a loud noise and black smoke rising.

On the ground, everyone heard the loud noise, and they all felt the violent shaking coming from underground.

Thunder?!

The first reaction of the Qing army on the city wall when they heard the loud noise was not to look down at the city, but to subconsciously look up to the sky, and when they found that something was wrong, the city wall was covered with black smoke, and they heard soldiers screaming.

The smoke blocked people's vision, and no one in the Qing army knew what was happening, only that their feet were shaking violently, and countless bricks were flying on the city wall at the east gate.

"What's going on, where did the thieves get their cannons!"

Zheng Guodong, a staff general who woke up from his sleep, couldn't even put on his shoes after hearing the loud noise, and rushed out barefoot, and when he saw that the area around the east gate had been shrouded in black smoke, he suddenly opened his mouth wide in shock, not knowing what was going on there.

On the city wall of the east gate, the Qing army who kept vigil at night could be described as a ghost crying wolf, many unlucky ghosts were smashed to pieces by flying boulders at the moment of explosion, and more fell with the sudden collapse of the city wall, and then they were buried by the earth, stones, and city bricks that fell again.

"The walls are falling, the walls are falling!"

The frightened defenders of the East Gate looked at the large gap in front of them as if they had seen a ghost, and the original continuous city wall seemed to be forcibly moved away by the gods, revealing a huge gap about dozens of feet wide. (To be continued)