The first reason these bodyguards paid no attention to the spring was their lack of understanding of its data, and second, even if they were aware of this information, they didn't believe anyone could penetrate the two-meter-thick solid rock, let alone infiltrate a hot spring at nearly 100 degrees Celsius, so they never focused their protection efforts beneath the spring.
But what no one knew was that there were anomalies like Yan Fei in this world. What seemed utterly impossible for the average person was remarkably simple for Yan Fei, as long as he tapped into his full strength, he could easily enter the underground hot spring and silently assassinate Yang Liu, the core figure under protection.
