Mach 20?
Netizens around the world were debating it, and many expressed their doubts, but several countries confirmed it was true. Thanks to research on hypersonic missiles, some powerful nations now possessed specialized equipment capable of capturing related signals and calculating the speed.
Although Li Xiang wore the Giant Whale Saint Armor, which possessed "Silent Hypersonic Technology," his high-speed sprints still left behind some faint traces. For example, there was the Vibration of the air. While he was silent, the intense pressure he exerted on the atmosphere would certainly create a detectable anomaly. It just wasn't as much of a public nuisance.
Then there was the way he skimmed across the surface of the ocean, creating ripples that fanned out and waves that rolled to either side, spreading over a massive area. This "phenomenon" was almost unique to him, and even satellites could capture it.
