If you were a physicist, would you be surprised at this fact, i.e., at the time of nirvana, bodies of the Lamas in Tibet are transformed into beams of light. In the world we exist, light travels the fastest. If you want to understand them, you must improve your own spirit. In other words, you must give up the attachment to this material world, in order to be able to get together with like-beings. Although a monkey or chimpanzee looks like a human being, its inner intelligence and spirit differs drastically.
Monkeys never look upon the stars and think about rules of morality.
If you talk to a Falun Gong practitioner, you will be shocked by their experiences. You will find the huge difference between the understanding and expression of this world among different people, all depending on their realm of awareness. Faced with these questions that are almost impossible to answer, we really don't know where to start. Plus, to find answers within the theoretical system of modern science is even harder. In fact, like I have said previously, the understanding of the truth depends on one's realm of awareness.