Throughout history, scientists have been troubled by two major questions: "Where do all the things in the universe come from?" and "How was the universe born?" For nearly a hundred years, it seems we have found the answers: the universe evolved from an initial state of extremely high density and temperature a finite time ago, and has reached its current state through continuous expansion and proliferation. Thus, the theory of the Big Bang has received the most widespread and precise support from contemporary scientific research and observation. However, this theory, which is equated with scientific fact, has faced skepticism from some scientists. They believe that the Big Bang may not be the true beginning of the universe, and that our universe may have shown signs of life prior to that event. Whether this theory, which could severely impact or even overturn the current pillars of cosmology, is valid or not remains to be seen. Let us embark on this journey into the unknown to explore this dazzling and profound mystery—what exactly happened before the Big Bang.