Ever since the battle at Leo Head, Bai Yi has embarked on a warlike mode.

He first expanded the reception pavilion on the surface of New Mars, clearing the surrounding lawn around it and adding dormitories, a cafeteria, and other essential living areas. He then relocated the Stargate Customs police officers rescued from the war to these areas. Then he turned to strengthening his own defenses.

The C11 galaxy is at the very end of the entire star map, and the only subspace route connecting it to the interior of the Milky Way passes through Leonhead. After the capture of the Leonhead stargate, this galaxy has been effectively isolated.

It is impossible to break through by force. After several attempts, Bai Yi is sure that the Crystal Storm is fully capable of subspace interception technology.

Bai Yi also has this technology.

He deployed several phase space interceptors in his own system, which could forcibly pull enemies out of the warp when they entered the system. However, due to the harsh environment in the warp, it was almost impossible for conventional ships to avoid the route and force their way through the warp.

After communicating with other border guards and confirming that they were unable to provide effective support, Bai Yi explained the specific situation to the rescued Star Gate Customs and police forces.

They also expressed their understanding of this. After all, those who can stand here are soldiers and police officers who have received rigorous training, and everyone has been aware of this.

They even selected some engineers from the remaining personnel. However, Bai Yi naturally didn't need them to carry out the design work. After all, the blueprints stored in the Border Guard had been thoroughly verified and tested by dozens of scientific academies, and they didn't need these people to provide modification suggestions. So these people volunteered to participate in the construction of the galaxy defense platform.

Bai Yi didn't stop him. On the contrary, he was happy to see him so motivated. After all, protecting these people was his responsibility. Bai Yi didn't realize that he had gradually and unconsciously taken on the role of border defender.

Bai Yi was a time traveler who had usurped the throne, an alien unbound by the laws of robotics. But he was a human, a member of the Milky Way. His heart bound his actions, tying him to the vast chariot of the Galactic Community.

Within half an hour, two modified construction machines were ready. Unlike the ones Bai Yi directly controlled, these two machines were equipped with personnel control equipment and life support systems. Bai Yi planned to hand them over to selected engineers for use.

Subsequent developments proved that this was a very correct decision. Despite the simplicity of the defense platform structure and the intelligent assistance built into the construction unit, the learning ability demonstrated by these engineers was still amazing.

With the help of some amazing human thinking abilities, the construction speed of these engineers soon caught up with or even exceeded that of intelligent builders.

Bai Yi was very surprised by this process, but it was just a surprise. He would not analyze and reconstruct the thinking mode of the replication engineer and apply it to the behavioral logic of the builder.

The construction machine is a general-purpose construction machine. Its advantage is that it can carry out large-scale asynchronous construction simultaneously and synchronously. Especially when carrying out the construction of mega-structure projects, this advantage of the construction machine will be infinitely magnified.

The jumping thinking of intelligent life may perform better on small structures, but when faced with complex situations, this kind of thinking not only greatly increases the probability of errors, but may even cause clustered chaos.

Due to the hasty evacuation, almost all of the 300 construction units previously sent to the Leontopodium Star Gate were lost. Fortunately, during the construction of the Star Gate, Bai Yi did not stop the transformation project of his own galaxy.

The number of construction units he now possesses has surpassed that before supporting the star gate. With the support of these massive construction units, the Luo Fan orbital tachyon cannon position was quickly built.

In conjunction with this, the construction of defense platforms within the galaxy is also progressing steadily.

However, Bai Yi had changed his defense strategy. Previously, he had been defending against external enemies, and it was impossible to accurately predict their exact location. Therefore, all defense facilities had to be evenly distributed throughout the galaxy.

Now, knowing the location of the Crystal Storm, he could draw a rough range along the subspace path. Then, by fine-tuning the placement of the phase space interceptors within the galaxy, he finally determined a relatively accurate landing point.

Any attempt to jump directly to the C11 system will be interfered with by the phase space interceptor and fall from the subspace or warp into this area.

Therefore, Bai Yi could concentrate all his firepower on this area. He placed all available defense platforms at the top and bottom of this area, leaving the empty space in the middle as a firing window for Luo Fan's orbital tachyon cannon.

The new Martian planetary fortress spacecraft is located at the intersection of the upward vertical line of the tachyon cannon and the backward vertical line of the defense platform, roughly in the middle position between the tachyon cannon and the defense platform.

The purpose of its existence is to fight in the wild and fill in the gaps. Of course, more importantly, it is responsible for dealing with the super crystal "Feima".

The planetary fortress ship possessed the largest caliber artillery in the entire galaxy. Even though Bai Yi didn't know the extent of the super crystal's mutation, he was confident that his 4000mm railgun was enough to destroy any solid armor. If that didn't work, he could still use the destructive ray.

After arranging everything on the cosmic sandbox, Bai Yi still felt unsatisfied. He felt as if he had forgotten something. It wasn't until he saw the small icons representing the asteroids clearly on the periphery that he suddenly slapped his head and remembered.

How could I have forgotten about those air mines?

A command was issued from New Mars, radiating outward in the form of a tachyon wave. This command was repeated three times, and the air mines that received it would deactivate their own space warp generators and flap their space sails to migrate toward the designated location.

Bai Yi planned to fill this area with all the air mines. Of course, there were so many air mines that it was impossible to cram them all in, so they were naturally arranged with the minimum spacing.

As long as the activation of the warp device does not interfere with surrounding equipment and the explosion power does not detonate other air mines, it means that another mine can be inserted in this position.

In addition, Bai Yi also ordered the icebreaker to drag a lot of asteroids and throw them into the gaps of the minefield. Of course, these were not real asteroids, but automatic sentry guns deployed in the asteroid belt along with the crystal minelayers.