The fluctuations from a Detection Card sent a chill through Chen Mu. Back when he had tried every possible way to escape the Ning Family's base, Detection Cards had been one of his greatest obstacles. He had done considerable research into evading their scans. He had found no workable solution and had ultimately escaped only by relying on the Breath-Concealing Method. But his efforts had not been wasted; his understanding of Detection Cards was far deeper than before. Thus, the instant the [Water Wave] scan touched him, he detected it.
The severe side effects of the Breath-Concealing Method meant it could never become a routine weapon. As those side effects grew increasingly intense, Chen Mu had been forced to use this extremely dangerous method as little as possible. He was good at preparing ahead and had devised numerous ways to handle situations like this. One was to bring the rhythm of his perception's vibrations as close as possible to the vibration frequency of the breath-concealing state, while never actually reaching the specific frequency required to enter it.
That was the method he used now. The Breath-Concealing Method truly deserved its reputation as a first-rate means of stealth and concealment. Chen Mu called the specific vibration frequency it required the "golden frequency." The closer he came to the golden frequency, the fainter his presence became. Combined with the techniques for hiding in darkness that he had learned from the Devil Woman, it allowed him to evade [Water Wave]'s detection.
But this only worked for concealment. The moment he tried to attack, the changes in his energy and perception would immediately expose his position.
Chen Mu could not sense Wei'a's presence at all. It was as though Wei'a had vanished into the darkness without a trace. His strength left Chen Mu speechless,