The zombie mother had already discovered Liu Long's base, and her huge black body began to tremble. The zombie mother ordered the zombie army to start marching towards the base through sound waves, and the mighty corpses began to turn into targeted attacks towards Liu Long's base. The group of black pressed corpses, a pair of scarlet eyes, fortunately, this is day and night, it is really incomparable.

"Boss, the zombies seem to have discovered our location." On the city wall, Xue Peng held a telescope and reported to Liu Long beside him what he had discovered through the telescope.

"Well, let's wait and see what happens." Liu Long nodded, he had already heard the warning from the system.

(Master, it has been determined that the zombie mother body has superior body senses.) Unlike ordinary zombies, the values of ordinary zombies' senses still remain unchanged from the values of humans before the mutation, and the habits of ordinary zombies still maintain the premise of seeing the eyes, and the senses of the zombie mother are very sensitive, and the zombie mother acts through the data of various sensory detections. Moreover, the system detects that the zombie mother body commands the zombie through sound waves, and commands the zombie through high-frequency vibration throughout the body. It was also detected that the high-level zombies seemed to be the forbidden army of the zombie mother, and they had been protected around the mother. ）

(Yo, the forbidden army will be organized!) Awesome! Liu Long heard the situation detected by the system in his mind, and complained helplessly.

"Boss, the zombie army is starting to accelerate!" Xue Peng reminded on the side.

As the zombie matrix discovered the base, the zombie army became a dedicated group heading towards the base. When the zombie army was about three kilometers away from the base, the zombie mother body trembled again, and the zombie army in the distance got the order of the zombie mother, and began to trot to accelerate with all their might, and millions of zombies rushed to the direction of the base.

"All combatants are prepared, once the zombies enter a one-kilometer range, artillery coverage will be implemented, and all personnel within a seven-hundred-meter radius will start firing freely!" Xue Peng unhurriedly gave the battle order.

The three hundred junior intelligent robots on the city wall were all arranged on the city wall in the northwest where they would first encounter the zombie army, and the intelligent robots were waiting one by one, holding the guns in their hands, aiming at the direction where the zombies came.

(Fire, covered propulsion!) Xue Peng gave the robot a command through his consciousness.

The grenade launch of the RS-007 rifle can cover a distance of up to three kilometers, and when the zombie army is less than two kilometers away from the base, Xue Peng ordered the intelligent robot to cover the artillery fire. Because of the problems of ammunition production, a multifunctional artillery shell production line can only produce 1,000 rounds of super-concentrated napalm per day, and after a day of production, only 10,000 rounds have been produced. Li Jianliang took away 4,000 rounds, so the base only had 6,000 incendiary bombs, which was only enough for the intelligent robot to cover a strike.

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"You have to move quickly, the battle on the other side of the base is about to begin, and we have to build the wall before the lost army finds out about us." As soon as Li Jianliang arrived at the blocking area, he began to urge the 100 members of the individual robot to carry out the task of building a wall.

The materials produced by the black technology are very powerful, and the degree of robustness is also very guaranteed. Because the wall built by Li Jianliang this time is only 10 meters high and 5 meters thick, and has a staircase to go up and down the wall. It's not the kind of high-end city wall that Liu Long's base has, the middle of the city wall of the base needs to be hollowed out, and stairs and internal shooting ports need to be built in the city wall, and an external elevator needs to be installed on the inside of the city wall.

Li Jianliang didn't need to build such a troublesome and huge wall, so the requirements for the wall were lower than the sturdiness he thought. Just transport a large number of alloy steel plates and materials, first use a large number of alloy steel plates and alloy steel frames to build a wall frame with a height of ten meters and a thickness of five meters, and then pour the prepared solidified materials into the built alloy frame. In other words, the outside of the wall made by Li Jianliang is iron, and the inside is full of black technology materials similar to cement.

"The framework has been built." A team member driving a single robot reported to Li Jianliang.

A single-soldier robot is an operational robot with a variety of strategic roles, which can not only carry out various construction activities that cannot be completed by humans, but also become a combat unit after picking up a gun. Moreover, the quality of the individual operation robot itself is very guaranteed, so it is a necessary equipment that cannot be missing in scientific and technological construction. With the construction of more than 100 individual robots, the steel frame of the entire wall has been gradually built. Dozens of tons of steel components that cannot be shaken by humans can be easily moved by three or two individual robots, and the seemingly impossible task can be completed in three hours.

"Inject super-coagulated material!" Li Jianliang decisively ordered everyone to take the next step.

Through the handling of manual and individual robots, a large number of materials were sent to the high wall one by one, and the members quickly dismantled the bags of materials. A flour-like material was poured out of the bag and layered at the bottom of the inner part of the alloy wall.

"Pour the red liquid from the jar and seal the mouth immediately after pouring, as fast as possible!" Li Jianliang commanded everyone to carry the next step of the operation, ordering the personnel to carry a tank of liquid material the size of an oil barrel.

After the materials were transported to the steel frame, cans of red viscous liquid were poured into the alloy steel frame along the top of the built alloy steel frame. As soon as the viscous liquid was poured, all the individual robots immediately lifted the alloy lids one by one and covered the opening at the top edge of the wall, and the entire wall was completed.

"Jianliang, that's it?" Because the fat man did not return to the base to attend the meeting, he did not know what these materials were at all.

Li Jianliang heard the fat man's doubts, smiled and answered him. All the steel frames and steel skins are the strongest alloys of black technology, and that kind of flour is a bulking agent-like existence, which will expand rapidly when it encounters a red viscous liquid. It only takes an hour to wait quietly for the material inside the steel frame to solidify, and once solidified, the hardness of the material can withstand the impact of the maximum yield of a nuclear bomb explosion, but it cannot completely prevent the arrival of radiation.

"It's done here, call the members of the mobile team to attract the zombie hordes in SZ City!" After Li Jianliang explained, he said to the fat man.

When the fat man heard this, he called the motorcycle mobile team to attract the zombie group. Li Jianliang's task is to continuously eliminate the zombie groups that have been attracted from SZ City, one is to accumulate funds, and the other is that this strategic place really cannot be lost! Moreover, there is also a danger that the blocking area will be discovered by the zombie army, but Liu Long knows that this probability is not very high through the system.

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PS：

Xiao Wei originally wanted to write a super long chapter, but after thinking about it, he gave up, and just streamlined it and sent a few chapters.