The momentum of the development of the entire Xin'an base can be described as thriving, and obvious changes can be seen every day.

In the blink of an eye, three days passed.

In these three days, the Yin'an Bridge has been repaired, and the three outer walls of the base have been increased to a height of 20 meters.

Even after the construction was completed, a telescopic bayonet mechanism was installed inside, which was only one meter long, but one of these bayonets was installed on the city wall at intervals of almost every meter.

As long as the mechanism is activated, then these spears can be stabbed instantly, and if there are zombies on the city wall in this case, they will definitely turn into a string of sugar gourds.

What's more, it's not a one-time trap, as long as the spears aren't broken or bent, they can be retracted into the grooves and wait for the next round to fire.

It can be said that with this kind of mechanism, the defense power of the base in Xin'an City has definitely risen to a higher level, and the next time you face the tide of corpses, you don't have to be too afraid.

As for the engineering team, after building the base, under the instructions of Ye Feng, it has begun to expand externally, and began to build a bridgehead opposite Yin'an Bridge, and then steadily advanced towards the urban area.

Although Ye Feng had ordered before that he would not carry out a comprehensive counterattack on the zombies in the base of Xin'an City.

But as long as the defense of the base is guaranteed, and the external expansion is appropriate, it is still completely fine.

Even if there are a few more such bridgeheads, they will be able to have more room for strategic transfer in the face of the corpse tide at that time.

Of course, the rapid development in the past three days is really inseparable from Ye Feng's help.

Under the command of Ye Feng, the special operations group can really be said to be fighting in the south and the north in the past three days, it stands to reason that there are only more than 500 people in the special operations group, even if they are killing zombies for 24 hours, it is unlikely to play much of a role.

But the soldiers of the special operations regiment, under the command of Ye Feng, were like a precise scalpel, skillfully cutting the entire situation.

There are nearly 100,000 people in the base of Xin'an City, and among these 100,000 people, the number of survivor squads who went out to adventure accounted for as many as 30,000.

These more than 30,000 evolutionaries who already had a lot of combat experience, under Ye Feng's skillful guidance, actually broke the situation of fighting on their own, and were guided into several forces, encircling and suppressing zombies in several key directions.

With more than 30,000 evolutionaries with combat experience, the combat power that erupted was probably no less than that of 10,000 regular troops.

With the soldiers of the special operations regiment in front, the battle can be said to be devastating. And this leads to the most direct result, that is, a large number of materials have been continuously collected back to the Xin'an City base, and it is these materials that support the rapid development of the Xin'an City base.

Of course, depression is not unavailable. In the reconnaissance squad sent out by Ye Feng, zombie animals were seen a lot, but mutant animals didn't even see a shadow.

This had to make Ye Feng secretly anxious, in the past three days, his consumption of mutated wild boar meat was basically more than 100 catties every day. If he deliberately cultivates and accelerates the progress of his cultivation, he will not even have a problem refining 150 catties.

If this continues, he will really face a big problem. The only thing that makes Ye Feng secretly happy is that the zombie virus in his body has been combining with his body, so that his physical fitness has been further enhanced, maybe after the virus is completely combined with his body, his hard days should come to an end.

A light cough interrupted Ye Feng's contemplation, Gao Ming, who had been honorably promoted to the commander of the guard battalion, saluted Ye Feng with a military salute, and at the same time handed out the documents in his hand.

"Brigadier Ye Feng, this is the latest information sent by the Dragon Tooth Clan, please take a look." Gao Ming said respectfully.

"Hmm!" Ye Feng agreed, and while taking the document, he also spoke: "Let the team advance two more blocks, and today's task will be over." ”

"Yes!" After Gao Ming saluted a military salute, he immediately went to convey Ye Feng's order.

And Ye Feng slowly opened the file bag, and the contents of the file bag were the same as usual, the progress of the four teams.

The team led by the two sisters, Ling Fengqiu and Ling Fengxue, advanced the slowest speed. Of course, their road is also the most difficult, not only is it a long distance, but more importantly, it passes through more mountains and forests.

As a result, they have to face not only zombies on the highway, but also zombie animals that occasionally emerge from the jungle.

Of course, this path was not deliberately arranged for the two of them by Ye Feng, but Ling Fengqiu applied for it herself.

In her words, only difficult tasks can lead to more feats.

But even so, they advanced nearly 100 kilometers in three days, which is absolutely amazing.

You must know that they are not just rushing, but they have to kill all the zombies at the same time, but also to clear all the vehicles on the road, which is definitely not an easy task.

Of course, it is not only the two sisters Ling Fengqiu who are difficult, but also Li Feng and Huang Haotian, who went to Pingfeng City, are also under a lot of pressure, after all, they are also opening up a road.

Compared to them, as a supernatural person, the team led by Xu Youcai is much easier.

On the one hand, this is because of Xu Youcai's ability, which can provide powerful fire suppression, and it lasts for a long time, so there is no need to think much about consumption.

As for the other aspect, of course, it is because there are not many zombies on the road, and even the road has been pushed away a lot because they have walked through it with a Hummer before.

So in just three days, Xu Youcai's side has already advanced half of the distance, and in another three days, this line can be completely opened up and docked with Xia City.

However, no matter how fast they are, they can't compare with Xu Wenjie's team.

The road to Shuangzhou City, in just three days, has been opened three-quarters of the way, which means that there is still a day at most, and the road between their Xin'an City base and Shuangzhou City will be completely opened.

At that time, as long as the road is open, it will be possible to reach the two cities in half a day at most in the case of driving, and the transaction between the two cities will no longer be a problem.

Moreover, before this, Xu Wenjie had already led some people to enter Shuangzhou City first, and joined the members of the Dragon Tooth Clan, who had been lurking in the past, and obtained first-hand information from them.

And these materials are in Ye Feng's stack of documents, and the red encrypted letter at the bottom.

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