Li Xiaoyao indeed realized that Nangong Yan was able to return alive because he hadn't ventured deep into the Secret Realm.
Or rather, the Secret Realm had a specific range, and ordinary people were unable to detect its boundary, but as a cultivator, one could perceive it through changes in nature's spiritual energy.
Nangong Yan and the others sensed the danger and, combining the experiences of Li Chengfeng and the others, dared not to proceed further.
Moving forward would result in triggering various catastrophic natural disasters.
In other words, as long as one stayed outside the Secret Realm, as long as they didn't step over that boundary, they would be absolutely safe from danger.
Li Xiaoyao, looking at the sea shrouded in darkness before him, gently caressed the wine jar in his hand and muttered to himself, "This Secret Realm, who knows what secrets it actually conceals."
