Yesterday I introduced "Dune", which is the first novel of science fiction giant Frank Herbert and is hailed as one of the benchmarks in the history of modern science fiction. After talking about "Dune", the fat cat naturally thought of Liu Cixin's "Three-Body Problem", and then thought of the cosmic killer: two-way foil, so our protagonist today is monster number 0077: two-dimensional creature

First of all, let me tell you what the fat cat understands the two-way foil. Some people say that it is an "interstellar fly shoot", which directly shoots three-dimensional space into two-dimensional space. In this way, the two-way foil is a cosmic mill, enough to crush space. But this understanding, no matter how you look at it, is a bit too rough.
After reading a variety of "three-body" materials, the fat cat believes that the two-way foil is actually a two-dimensional space, when it comes into contact with the three-dimensional space, the three-dimensional structure will fall to the two-dimensional space, and eventually decompose into an incomparably huge plane. (However, it is described in the original "Three-Body Problem" that when human beings are two-dimensional, they can actually see human forms, which should be scattered into a plane according to the reason, which is not easy to understand.) )
(The picture above is the fat cat's understanding of the process of two-dimensional earth with two-way foil.) Not to flatten, but to break the earth into a flat surface)
In addition, the use of two-way foil is introduced. The two-way foil is first encapsulated with a force field, and when it encounters a clean object, it is released, allowing the three-dimensional space to automatically fall.
Logically, once the two-dimensional process begins, the entire universe will eventually become flat, but in "Three-Body", it can be restricted to become an interstellar weapon (cleaner), which may be a black technology beyond human cognition.
With the previous understanding of the two-way foil, do you realize how terrifying it will be once a two-dimensional creature invades the three-dimensional space? (After all, the two-way foil is essentially a two-dimensional space)
The so-called two-dimensional creature refers to the organism that lives in the two-dimensional space, and this organism has only two elements: length and width. But so far, human beings have never found a real two-dimensional space, so two-dimensional creatures are currently fictional creatures. (When we say that the two-dimensional world is actually a three-dimensional space displayed on a plane by perspective, it is different from the two-dimensional world in the true sense)
Using the wings of the human imagination, we are using the science fiction short film "Lead Me" as a material to discuss two-dimensional creatures today. The two-dimensional creature of Lead Me was born in the familiar two-dimensional world, which was conceived inside the pencil head (or in other words, in human fantasy).
After the birth of two-dimensional organisms in three-dimensional space, the body can be arbitrarily converted between two-dimensional and three-dimensional, and can swallow three-dimensional entities to rapidly expand itself. (So don't look at its small in the picture, once the two-dimensional creature is frantically swallowed, it can quickly evolve into a planet-level troll) This is the same as we said before, the three-dimensional space collapses into the two-dimensional space, but the two-dimensional creature is more active than the two-way foil, that is to say, it can actively choose and actively devour.
And two-dimensional creatures can instantly collapse three-dimensional objects into two-dimensional structures, which is consistent with the scene described in "Three-Body". After the three-dimensional object is instantly two-dimensionalized, it still retains its original form.
In addition to the above attacks that use the rules of the universe, two-dimensional creatures can also instantaneously three-dimensional, use physical attacks and the larger the body, the stronger the damage.
Since two-dimensional creatures exist between two and three dimensions, it is foreseeable that the weapons that humans already have cannot cause any harm to it. (Because the physical rules are different)
In summary, once a two-dimensional creature appears, it may become a nightmare existence in the three-dimensional world. Next, we continue to talk about the creatures in the human fantasy world, interested friends must remember to pay attention to me.