Duan Ling Tian did not wait for Wang Yi Yuan before he entered the secret realm because he knew that even if they entered together, they would be transported to different places at the periphery of the secret realm as soon as they entered. From the periphery of the secret realm, all of them had to make their way to the heart of the secret realm. During the journey, they would have to face many challenges.
If the secret realm in the Crimson Demon's Little World was a circle, the prodigies would have to make their way from the edge of the circle from all directions to the center of the circle. Only those who managed to reach the heart of the secret realm within a certain period of time could leave the secret realm alive.
It was difficult to meet another person at the periphery of the secret realm, but the chances of meeting another person would continue to increase as they drew close to the heart of the secret realm.