Between the primary world and the higher-dimensional universe lies a barrier that humanity cannot understand or perceive.
Human intelligence can always uncover phenomena that science cannot explain. Through bold hypotheses and deduction, we find theories that people can just barely grasp to explain the universe.
When studying three-dimensional space, people developed mathematical theories for projecting objects or geometric shapes from space onto a two-dimensional plane. So can higher-dimensional space, in turn, be projected into three-dimensional space? In his theory of relativity, Einstein defined the three-dimensional universe with an additional dimension of time, making it four-dimensional. According to general relativity, matter and energy affect the structure of the space-time around them, causing it to curve. Space-time is no longer a fixed backdrop; it can be distorted. So if we could anchor a point in time and chart a sequence of events as they change over time in three-dimensional space, could that break through the limits of human thought and help us understand the higher-dimensional universe?
But our story is not about the expansion or composition of the universe.
The theory of space-time projection is used by scientists to explore the mysteries of the universe under extreme conditions, when the definition of time becomes unclear.
But when extreme conditions arise in our world or in our lives, when we find that the definition of time around us is no longer clear, that singularity may be this world, a city, a neighborhood, or even ourselves.
Our protagonist, Zhou Yechen, is going through the most extreme circumstances of his life. Perhaps he is a two-dimensional projection of you or me, and yet how can we be sure we are not projections of some unknown third dimension?
