The players are still cheering, and the gates of Shadow City are quietly open...

A large group of life professional players quickly ran out of the city under the leadership of Shi Qiusheng, cleaning up the items dropped on the battlefield all the way, and rushing all the way towards the huge fire ditch that was blazing.

"Mr. Shi, you're too picky, aren't you, you also pick up these things?" The ghost of the end of the world laughed on the castle tower.

"Little ghost, do you know what to say, these props can be broken down into materials, and there are a lot of equipment drawings here, don't take them for nothing." Shi always laughed and scolded under the city.

"Mr. Shi, you go out of the city just to pick up this garbage?" Nightfall asked in surprise.

"No, there's something else to do, just wait and see." Mr. Shi smiled mysteriously.

I saw this group of professional life players quickly clean up the loot in the open space outside the city, and then a large group of people quickly ran towards the burning moat...

On the moat, the flames four or five meters high emitted bursts of fiery red light, forming a long wall of flames, blocking the huge number of evil clan legions on the opposite bank.

As long as the black oil is not burned, it will be difficult for these evil legions to cross the moat and attack the city...

But this is not good news for players defending the city.

There will always be a moment when the fire oil will be burned, and when the evil clan will attack in a big way, they will only be caught in waves of bitter battles...

This situation is obviously not acceptable to Tan Chu.

The purpose of defending the city this time, he knew very well, first of all, to delay the battle of the city as much as possible, and create opportunities for both the dwarves and the generals of the town.

Secondly, he wants to kill as many evil soldiers as possible, attract as many soldiers as possible from the evil camp and ambush site, and cooperate with the other two allies' big action.

At the moment, it seems that the purpose of attracting enemy troops has been accomplished, and it is only left to delay time...

As for the method of delaying time, he had already considered it when he began to prepare for the defense of the city.

The most important thing in defending the city is to keep the enemy out of the city, and to do this depends on how he uses the power of the moat and the black oil...

Therefore, when the dwarves were digging the moat, he asked the Dark Night Cangfeng to send people to guard these dwarves, and at the same time, he also asked Mr. Shi to lead people to follow the dwarves to arrange this key moat together.

Now it seems that the defense capability of the moat is really good, but I don't know how the other ability of the road is...

Seeing that Shi always led a large group of life players to quickly approach the burning fire wall, the players didn't know what they were going to do, but Tan Chu knew it very well in his heart.

The group quickly rushed to the edge of the moat and came to a seemingly ordinary stone level...

I saw that Shi always bent down and lay on the ground, stretched out his hand on the ground, and didn't know what Lu Dao was doing.

The life players around him also bent down and groped around him on the ground at the same time...

Airplanes...

Just when everyone on the castle tower was surprised, suddenly there was a strange sound outside the city.

I saw that the group of players lying on the ground stood up immediately after the sound sounded, and rushed towards the city gate under the leadership of Mr. Shi!

"This is..."The beauties didn't know why, and suddenly looked at the group of players who were fleeing quickly, and couldn't figure out what was going on.

Buzz...

Bursts of strange noises kept coming, and just after Mr. Shi and the others were a few meters away from the moat, the huge fire dragon burning in the moat suddenly seemed to have found an outlet for catharsis...

The billowing flames carried countless black oil and flowed into the ground!

A long fire dragon, within half a minute, suddenly disappeared without a trace...

The wall of fire disappears, and the surrounding environment immediately darkens and returns to its nighttime appearance again...

A large number of evil legions on the other side of the moat also reappeared in front of the players.

"Ahh How so, what about the wall of fire, what about the oil? Nightfall asked.

"Yes, little beast, what's going on, we don't know that there is still this mechanism." Zhang Daishan asked suspiciously.

"We were all offline at that time, and this is a hidden mechanism that Mr. Shi and his brothers worked hard all night with the craftsmen of the dwarf clan to complete." Tan Chu said with a smile.

The huge flames in the moat and the black oil in most of the ditch, after waiting for a group of players to open the mechanism, quickly flowed into the dark passage of a location, and the moat was suddenly empty...

There is no black oil, no wall of fire, and a deep dry ditch appears before the players' eyes!

"Little beast, there is no black oil to burn, how can we deal with the evil clan?" Zhang Daishan asked.

"Don't worry, they always have a way." Tan Chu said with a smile.

"Say it quickly, don't sell it, we're all dying." Styx Snow asked anxiously.

"Let me tell you, after the dwarves helped us dig the moat, we always asked if we could add an extra dark passage, which could easily drain the black oil in the moat at any time, and at the same time add black oil to it, the dwarves were very happy, and they added an extra dark passage to us that night, which is what you saw." Styx Cangfeng smiled.

"This agency is so good, I didn't expect you to hide it from us." Stygian Snow said in surprise.

"Didn't they all go offline and rest today, I forgot to tell you, but now Zhilu Dao is the same." Tan Chu said with a smile.

"Is this mechanism capable of extinguishing all the burning black oil and then re-flowing it?" Zhang Daishan's beautiful eyes flashed and asked in surprise.

"Sister Shan is smart, that's what the masters of the dwarf clan do, if the fire oil flows into the dark passage and is sealed, it will immediately stop burning, and then continue to flow into the moat from the dark passage on the other side, saving us a lot of resources." Tan Chu nodded and said.

"I understand, with the use of black oil in this way, we don't have to worry about the black oil burning all the time and being wasted, this mechanism is too ingenious." Nightshade Moon exclaimed.

"Where's the tunnel on the other side?" Zhang Daishan hurriedly asked.

"It's in the city, you go to the other side and look, maybe they are waiting for the fire oil to be extinguished, and then reopen the dark passage." Tan Chu explained.

"Let's go and see." Styx Snow excitedly pulled Zhang Daishan and Styx Moon, and with the same surprised delicate baby, several beauties quickly rushed to the other side of the city tower...

They excitedly stood on the city tower and looked into the city, and sure enough, they saw that Mr. Shi and a group of professional players were gathering in an open space under the city tower at this time, and laboriously lifted a bluestone slab.

The slab was removed to reveal a square hole in which the glow of the fire could be faintly seen!

The black oil was not completely extinguished, and Mr. Shi immediately led someone to reclose the slate, as if waiting for the flames inside to disappear completely...

The beauties were amazed, and the situation in front of them made them even more happy...

They had already understood that the secret passage dug by the dwarven masters was a U-shaped ditch, and the side that opened the secret passage was near the moat outside the city, which could temporarily flow all the fire oil into the dark passage.

The other switch is in the city, as long as the oil is extinguished, you can turn on the mechanism, so that the black oil can flow into the moat again from another channel...