Those who reincarnate must die.

As the scenery changed, Zhang Lang arrived at a command center filled with a futuristic feel.

He himself sat high in the center, with a dozen operators busy at their consoles diagonally below him, and a huge semicircle of electronic screens directly in front of him displaying the vastness of space, flashing various data and icons.

Zhang Lang naturally couldn't understand these data, but the badge thoughtfully provided annotations for him. At the same time, the background of the current world view is being further improved.

He was in the command center of the central flagship of the Third Expeditionary Force of Humanity. Humanity had only recently discovered the Proon Sector; prior to this, the other eight races had been locked in fierce battles in this sector for a long time, each controlling numerous planets and maintaining a certain balance. As a newly arrived power, humanity needed to swiftly disrupt this balance and seize a sufficient number of planets.

According to the new mission prompt, the condition for victory is to occupy at least one hundred planets within the time limit.

"Commander!" A mechanical voice sounded beside Zhang Lang: "We have arrived in the Proon Star Sector. According to the intelligence transmitted back by the probes, there are eight factions fighting here. Currently, our Third Expeditionary Force is using interdimensional travel and has chosen the Red Manco system within the star sector as our landing point."

Zhang Lang turned his head and saw that the speaker was a mechanical face covered with bionic skin. This face only had facial features, no hair, and its gender and age were indistinguishable. A mechanical arm and circuits were connected to the back of its head, making it look rather strange and terrifying.

This is the output port of the artificial intelligence system responsible for controlling the fleet, designed this way to facilitate communication with humans. Usually, the civilian version of this thing would be decorated to resemble handsome men and beautiful women that would make people drool, but in the military, practicality is paramount; as long as it has all the functions, a slightly frightening appearance is acceptable.

"Zhuge." Following the clues on the badge, Zhang Lang called out the code name, or rather, the name, of the artificial intelligence.

What was the reason for choosing the Red Manco Galaxy?

Zhuge continued in a completely emotionless electronic voice, "This is the most remote star system in the Proon Sector, with one constant star and six planets. The third planet, codenamed Dust Star, has been determined to be a low-habitability planet. It is currently occupied by a small Zerg hive. Due to the Zerg's inability to coexist with most intelligent civilizations, they have no allies in this sector. Attacks against them are unlikely to attract intervention from other forces."

As Zhang Lang listened, he looked at the annotations on the badge.

The term "low-habitability planet" is a classification used by humans to describe the habitability of various planets in the universe.

Taking Earth, humanity's home planet, as an example, it is a highly habitable planet relative to humans. Its atmospheric composition, cosmic rays, temperature, gravity, and other conditions are all very suitable for human survival, and can basically support human activities on it without any protective measures.

Planets one level below Earth are called moderately habitable planets. These planets have some indicators exceeding human tolerance (usually atmospheric composition), and unprotected human activity is not recommended. Prolonged, complete exposure can harm the human body, inducing disease and even mutations. However, with appropriate protection, long-term residence on such planets is possible.

Even worse are called low-habitable planets. You have to wear full protective gear to land on these. Once you are fully exposed, it will cause serious damage to the human body in a short period of time, or even death.

The above three types, though varying in degree, can all be considered "habitable planets," defined by the presence of carbon-based life forms and the formation of complete and complex ecosystems. However, due to differences in physical structure and the environments they adapt to, the degree of habitability varies for different species.

In other words, a planet with low habitability for humans may be highly habitable for some other species. And Earth, humanity's home, may be low habitable for some extraterrestrial species, requiring them to take precautions to land on it.

Since the most easily formed life form in the universe is carbon-based life, the general criteria for a "habitable planet" are basically fixed, but the subcategories of low, medium, and high habitability will vary.

However, this is not a problem for a civilization with sufficient technological power. As long as the planet can support the survival of carbon-based life, then the hard indicators such as gravity, cosmic rays, water resources, and temperature are basically the same. Generally speaking, the main problem lies in the composition of the air. As long as they can occupy and colonize it, it is only a matter of time before they can transform it into a highly habitable planet.

However, apart from "habitable planets," most planets in the universe are classified as uninhabitable planets.

These types of planets typically lack carbon-based life, and many don't even have a sufficient atmosphere. Their environment is almost indistinguishable from outer space. There's basically no need to terraform them; they're usually only recorded as mineral resources, with the most common activity being establishing a space base for mining and scientific research.

Even worse than uninhabitable planets are called hell planets.

The environment of these planets is even more terrifying than outer space. They either have extremely high gravity, extremely high temperature, or extremely unstable environment, with disasters such as earthquakes and hurricanes of enormous scale occurring every moment. Not to mention protective suits, even spaceships dare not easily land on these planets. They are truly forbidden zones.

According to this classification, the dust planet mentioned by Zhuge Liang is at least a "habitable planet," although the environment is rather harsh for humans.

How large is this mother nest?

"Currently, the creep covers 30% of the planet's surface, with an estimated number of about 600 million insects."

"That's really not a large scale..." Zhang Lang frowned. According to the badge's annotation, the Zerg are extremely adaptable. Once they occupy a planet, they will frantically kill and plunder its biological resources. At the same time, they will produce a creep that can absorb solar energy to generate nutrients. Based on this, they will build a complete and simple ecological cycle within the Zerg, multiplying wildly until the entire planet is covered with creep, becoming a paradise for the Zerg.

Generally speaking, a planet the size of Earth, after being completely terraformed by the Zerg, could accommodate at least tens of billions of Zerg. This one only has 600 million, which is just the beginning.

"Such a small scale, how come it wasn't attacked and taken away by other forces?" Zhang Lang stroked his chin.

"Because the original environment of Great Dust Star was also very harsh, almost on the edge of the habitable threshold, only the highly adaptable Zerg could successfully take root. Moreover, the mineral resources of this star system are not abundant, it can be said to be an area abandoned by other forces."

"That's perfect!" Zhang Lang smiled slightly. "This is our first stepping stone to advance into Proon!"

With that, Zhang Lang issued his first order as commander-in-chief: "Slaughter the Zerg and occupy Great Dust Star!"