Some people believe that in the theory of ten-dimensional space, the first dimension is the zero dimension. Zero-dimensionality can be thought of as the cardinal point of a dimension, which represents a point without any dimension, divergence, or direction. In the zero dimension, there is no space, no matter, everything is ethereal.

However, zero-dimensionality can also be seen as the foundation of everything, encompassing everything. For example, the "singularity" that led to the Big Bang can be seen as a manifestation of zero-dimensional existence, which is the beginning and source of the universe and the foundation of all existence. In this sense, the zero dimension not only represents nothingness and infinity, but also represents the possibility and potential of everything.

One-dimensional space represents the most basic and simple form of space. It is a space made up of points on a line, with no width or height, only length. In one-dimensional space, objects can only move forward or backward with no other direction of motion.

One-dimensional space also has many practical applications in life. For example, the number line that we commonly use is a manifestation of one-dimensional space. On the number line, each point has a unique coordinate value that can represent a different numeric value. This simple and intuitive one-dimensional space form not only allows us to better understand the concepts and phenomena in mathematics and physics, but also lays the foundation for us to explore a broader space world.

However, one-dimensional space also has its limitations and shortcomings. Since it has only one direction, the object can only move forward or backward, and the motion of rotation and turning cannot be realized. This single mode of motion also limits the range and degrees of freedom of the object in one-dimensional space. Therefore, when exploring a more complex space world, we need to use a more high-dimensional space form to better understand and describe the nature of the world.

A two-dimensional space is a flat space composed of length and width, which can be seen as a piece of paper or a screen, which can only extend and expand into the plane in which it is located. In two-dimensional space, objects can move freely in a plane, either left and right, up and down, or diagonally. This kind of flat motion facilitates our understanding and description of various phenomena in two-dimensional space.

In modern science and engineering, two-dimensional space also has a wide range of applications. For example, computer image processing, graphic design, architectural design, map making, and many more all require the use of mathematical and geometric tools in two-dimensional space. In addition, many natural phenomena and forms of living organisms can also be described and understood with graphics and models in two-dimensional space.

However, two-dimensional space also has its own limitations and shortcomings. Since it is composed of only two elements, length and width, it cannot show the depth and three-dimensionality of objects in three-dimensional space. This flattening of the expression may affect the understanding and description of the true form of the object. Therefore, in a more complex and diverse spatial world, we need to use higher-dimensional spatial models to better describe and understand various phenomena.

Three-dimensional space is a space composed of three dimensions: length, width and height, and it is the real space we are in. In three-dimensional space, objects can not only move freely in the plane, but also move up and down in a direction perpendicular to the plane, thus expressing depth and three-dimensionality. This three-dimensional movement provides us with a powerful tool to understand and describe the real world more accurately.

In modern science and technology, three-dimensional space also has a wide range of applications. For example, architectural design, automotive engineering, aerospace, game development, virtual reality, and other fields all require the use of mathematical and geometric tools in three-dimensional space. In addition, many natural phenomena and the morphology of living organisms can also be described and understood with models and graphics in three-dimensional space.

However, three-dimensional space also has its limitations and drawbacks. Since the human perceptual system is limited by time and space, we cannot truly feel and understand the space of the fourth dimension and above.