Please tell us whether there is a four-dimensional world! I have also seen some brief descriptions of the four-dimensional world on the internet, but there are still doubts about its existence!

Let's discuss it. It's better to search Einstein's theory of relativity and related papers. From the perspective of philosophy and cosmic physics, we have talked about the concept of transcending four-dimensional space. It is better to discuss the theory of relativity for a year than to watch it for two hours. In fact, professionals in philosophy and cosmic physics may not be proficient in understanding it.

The theory of Buddhist philosophy said two thousand years ago that the universe is boundless. Besides our world, there are other space-time systems, which exist independently and have long gone beyond the scope of four-dimensional space from a philosophical point of view. Now encyclopedias and middle school history textbooks all say that Buddha Sakyamuni is a thinker.

What I am introducing is the content and viewpoint that philosophy and physics have long recognized. Not my personal opinion.