The passage exit is not far from the Abyss entrance of the Crimson Abyss. As soon as city-breaking level demons emerge from the Abyss, they can sense Yan Luo's presence.
Earlier, when Yan Luo returned home to retrieve his exoskeleton and weapons, Wu Zechuan had already notified every command post of his discovery, instructing them to watch the passage and see if the city-breaking level demons were converging towards Yan Luo.
You Yifeng received the notification but didn't tell anyone. He was quite curious about Yan Luo.
Before knowing Yan Luo could enhance his physical abilities, You Yifeng already found him interesting. Now, discovering Yan Luo had seemingly embarked on a path distinct from that of the Engravers, You Yifeng was even more surprised.
And now, the city-breaking level demons have truly arrived.
The entrance can't support too many city-breaking level demons coming through at once, according to researchers' analysis, as that could likely lead to a rupture.
