Centari are carbon-based creatures with a humanoid appearance, male and female, pale or grayish-brown skin, tall, over two meters on average, with longer and slender limbs than humans, five fingers (one finger at the end of the palm, similar to the wrist pad of a feline), and three toes.

If you look closely, you can also see that the necks of the Zetarians are covered with small holes - the planets where the Zetarians were born are filled with poisonous gases, and the holes in the neck are their respiratory organs.

Since becoming an interstellar civilization, the Zetarians have shown an aggressive nature and are fond of purging the lower civilizations - to do so, they have modified their bodies and added filters to their head-covered helmets to adapt to the atmospheres of other planets.

The Zetari do not use the form of "speech" to transmit information internally, and they are able to release special gases through the breathing holes in their necks.

When there is enough special gas in the confined space, the Zetarians can release special light waves from the holes in their necks, which will be refracted and distorted in the air, producing a precise enough amount of information for mutual sensing.

In addition, the Zetarians also like to use a variety of armor to mark their social status, and the more noble the Zetari, the more gorgeous the color of the armor they wear.

At this moment, on the tower-shaped mothership in Schwarzschild's throat, a Zetari commander wearing golden full-body armor who would not disobey even if he ran to the shooting site of the page game advertisement, was standing in front of the command platform, coordinating the overall situation.

The Zetarians are a civilized race capable of conducting interstellar warfare, and their strategic thinking and tactical approach have been tempered for a long time in years of space warfare.

For them, the first priority of a planetary invasion is to gather information.

There are countless races in the galaxy that have been killed by seemingly low-level civilizations because they claim to be high.

An alien research ship landed over a medieval agricultural planet and was just thinking about using the landing fleet as a blessing, but a legendary archmage in a gray robe used meteorite to destroy all the landing forces, leaving only a sampan to escape.

A certain interstellar race descended on the decaying planet of the electrification era, and just thought about using the Star Destroyer cannon to burn the glass, only to be destroyed by an individual life with long blond hair who called himself a Saiyan with a qigong cannon.

These historical lessons are infrequent and can be described as one in 10 billion, but there are still examples.

The people of Zetari are not willing to take this risk, even if it is one in 10 billion, and they need to avoid it as much as possible.

"Commander, we are collecting information on various carriers on this planet through the Information Gathering Sphere. Including but not limited to slate, wood and bamboo, paper, electronic chips. ”

A low-ranking Zetari officer used the light wave to report to the general.

The metal spheres that are dropped over the earth play the role of information gathering.

"Very good," General Zetari nodded, "and we must do our best to avoid a head-on confrontation until we have all the information from the enemy." to prevent the opponent from having destructive power beyond the planetary level. ”

The alien general said casually, his fingers fiddling in the air a few times.

The ship's intelligent AI, which has been instructed, immediately delivers what it thinks is valuable information about the earth.

"2018 National Unified Examination for Admission to Ordinary Colleges and Universities, English Listening, Part I, Listening (two sessions, full score of 30 points).

When you do the questions, mark the answers on the test paper, and after the recording, you will have two minutes to transfer the answers from the test paper to the answer sheet. ”

The audio was played on the bridge of the Zetari Star Command Ship, and all the Zetari officers listened intently, a confused expression appeared on their rough and hideous faces.

“.... You have 10 seconds to answer the question and read the next question. Read each conversation only once.

Example: Ho much is the shirt?

A、£19.15

B、£9.18

C、£9.15

The answer is C, the shirt costs nine pounds and fifteen pence. ”

The starship AI interrupted the audio, and the Zetari officers on the bridge looked at each other with a confused expression.

This audio, first, does not tell about the level of destructive power of weapons possessed by earthlings, and secondly, it does not tell about the research and development status of light-speed engines and anti-gravity engines of earthlings, but just talks about a bunch of inexplicable non-nutritious content.

"I see," said a junior officer with a raised hand, "this audio is meant to tell us how civilized the Earth has been.

First of all, they have more than two forms of language, which can be deduced that they have at least multiple cultural forms.

Secondly, they have an extremely complete system of money circulation, as well as a mechanism for buying and selling commodities.

Thirdly, they have a complete teaching physique, and they can also select more superior talents through the fairer form of examinations, which proves that they have a perfect social organization structure earth.

Finally, they also have the political concept of the state, from which it can be deduced that their main military power comes from the armies of various countries. ”

The reasoning of this low-ranking officer named "Yang Willy" attracted praise from other colleagues, and many female officers of Zitari threw admiring glances at him.

However, General Reinhardt von Royenkram, who was the commander of the Zetari starship (in the language of the Zetarians, a series of extremely indistinct and hoarse hisses), shook his head and said calmly: "Major Willy Young, you are still too young and too simple. ”

"Oh?" The low-ranking officer humbly begged for advice, "My subordinates have not thought it through, and I hope you can correct it, general." ”

"Hehe, this audio proves not that the earth is strong, but that the earth is weak."

The general said confidently: "You see, first of all, the current concept of national politics on the earth proves that the political power of the earth is not unified, and it can be further deduced that they have not developed the technology of telepathic links.

Second, they generally use 'sound', which is an extremely inefficient way of transmitting sonic information, rather than telepathy. Even the little children of Zitari know that audio transmits only a few bits, and that the race that uses sound to transmit information is a sign of its low clumsiness.

Third, they do not have genetic modulation technology, and there is a huge difference in intelligence between individuals. Moreover, this difference in intelligence can only be identified in an extremely simple and crude way by examination, which also proves from the side that they do not even have the most basic brain analyzer, and cannot identify the intelligence level of individual life according to the degree of brain development.

Fourth, they still use the monetary exchange system, which shows that their productivity is extremely low and cannot meet the material needs of each individual's life. Of course, it can be deduced that their level of productivity development is still a great distance away from breaking out of the star system. ”

General Zitari's explanation was eloquent, and when he heard the low-ranking officers nodding yes, they couldn't help but applaud their palms and praise: "High, really high." ”

"Hahahaha."

General Zitari stroked his palms and laughed, waved his big hand, pointed to the blue planet in the picture with great ambition, and said loudly: "In this way, the earthlings are really vulnerable. ”