Throughout the journey, Chen Gu had activated both "Mind Belief" and "Radiation Field," yet he hadn't detected a single trace of the Subterraneans. This led him to speculate that his earlier performance had caught the attention of the high-ranking Subterranean Shaman.
It was very likely that the high-ranking Shaman had used some kind of spell to obscure Chen Gu's professional skills.
When Chen Gu reached the altar, he tried using a flash grenade—something he had never used before—and his suspicions were confirmed.
Chen Gu was, after all, employing "Radiation Field," but he was completely unaware of the Subterranean warriors hidden and ready to ambush.
Now that they were exposed, the Subterraneans no longer concealed themselves. Suddenly, a commanding and ancient roar echoed from the high altar, seemingly a command.
