For nearly half an hour, Su Bai rode Bearen through the rainforest.
After finding the bronze door, he entered without any hesitation.
When he returned to his senses, the world in front of him changed again. There was no scorching sun or dense forest.
Only five arenas were over a hundred square meters in front of him.
"What the…" Su Bai came to a stone stele not far away with rules written on it.
Simply put, the fourth floor's challenge was to complete the arena within the specified time. Then, one could enter the fifth floor of the ruins.
The time limit was 15 minutes.
"Let's just start." Su Bai walked into one of the arenas with Bearen.
Just in case, Su Bai had Bearen equip the Thundergod Bracers in advance in case of an emergency.
"Let the trial begin!"
A deep, hoarse voice sounded.
The sky above the arena suddenly darkened in the next second, and a -hundred Bird-Beasts appeared.
