Along the way, they mostly encountered Crimson Thunder Monsters. Besides those, they also came across mountain-sized beasts with the strength of True Immortals, yet no intelligence, instinctively lethargic. Whenever the cultivators came across them, they subdued their auras, not daring to wake them, and quickly fled.
The journey had been quite smooth, and they hadn't encountered any great dangers.
This was mainly because they were still on the outer edge of Thunder Prison, far from the depths, which is why they hadn't encountered Immortal Level dangers.
Upon arriving at their destination, the cultivators did not relax but instead looked even more solemn, because the real danger, they anticipated, was just beginning.
"This is the entrance to the Immortal Spirit Realm, which is already on the path to collapse," Li Zhengyang said in a low voice, standing in front of Han Yi.