Four-dimensional space has three-dimensional space morphology and space for temporal changes. In four-dimensional space, objects can not only move freely in three-dimensional space, but also change in the time dimension, thus forming a more complex and diverse mode of motion. To put it simply, three-dimensional space plus a timeline constitutes the so-called four-dimensional space.

A five-dimensional space consists of a five-dimensional spatial structure. In addition to the traditional three-dimensional space and time dimensions, the five-dimensional space also contains a hierarchical dimension and an unknown dimension. In the five-dimensional space, objects can not only move freely in the three-dimensional space, but also change in the time dimension, and at the same time have the existence of layers and unknown dimensions, thus forming a more complex and diversified mode of motion. In layman's terms: in the four-dimensional space, there is only one timeline, and everyone has only one life.

But in the five-dimensional space, there are infinite timelines, and the timelines are also dynamic; The possibilities in your life are endless, and you can even "travel" back in time to the past.

A six-dimensional space is a spatial structure with six dimensions or degrees of freedom. In six-dimensional space, we need to use six data or coordinates to specify the position in that space to describe the movement and change of objects in this space. Since the human perceptual system is limited by time and space, we cannot directly perceive and understand space in six dimensions and above. Therefore, the concept of six-dimensional space needs to be further understood and described through higher-dimensional spatial models and abstract concepts.

Seven-dimensional space is often thought of as the dimension of all possibilities in a single universe. In the seven-dimensional space, we can imagine that every possibility represents a point in space, and these points constitute a space full of possibilities and unknowns.

Eight-dimensional space is a more complex and diverse concept of space, often thought of as a dimension of the multiverse. In the eight-dimensional space, we can imagine that each universe represents a point in space, and these points constitute a space filled with different universes and realities. The existence of the eight-dimensional space provides us with a deeper and more comprehensive perspective that can help us better understand and explore the mysteries of the multiverse.

The nine-dimensional space is a very abstract and complex concept that is often thought of as the dimension of the warped multiverse. In the nine-dimensional space, we can imagine that each universe represents a point in space, and these universes influence and interfere with each other, forming a space full of warping and distortion.

Ten-dimensional space is a very important and special concept that is often considered to be the dimension of the whole world, as well as the dimension of points. In the ten-dimensional space, we can imagine that each point represents an event or phenomenon in the world, and these events and phenomena influence and interfere with each other, forming a space full of complexity and diversity.

On this night, Mu Cheng's thoughts seemed to travel through the dimension of time and space, exploring those mysterious and profound questions. I thought of the people around me, my work and life, and the future and destiny of mankind. These thoughts are intertwined to form a magnificent and spectacular picture that makes him feel small and insignificant in this moment.

However, Mu Cheng was not defeated by these questions and confusions. On the contrary, he felt a greater desire and enthusiasm to keep exploring and discovering a wider world and deeper truths. On this night, his mind and soul were inspired and ignited by this mysterious theory, which will also inject more courage and wisdom into his future life path.