In the classroom, a professor specializing in the study of parallel worlds spoke eloquently on the podium.
"Up to now, human knowledge of parallel worlds remains rather limited. The exploration of these worlds has always been tentative, with most areas still shrouded in mystery.
Of course, there are many reasons for this. On the one hand, the number of martial artists among humans is limited.
With a global population of seven billion, there are only about 200,000 martial artists, averaging one martial artist for every 30,000 people. The number of registered explorers is even fewer, around 50,000.
However, the number of spatial passages big and small discovered globally has exceeded 500,000 and continues to increase. With only 50,000 explorers spreading across 500,000 spatial passages, the severe shortage of explorers means humanity lacks the concentrated power to deeply and meticulously explore.
