Mu Chen's glaring eyes showed surprise when a strange response came out from deep beneath the Heavenly River. This was because he realized the imprints he left on those spirits of the Heavenly River had once again showed up in his senses.
However, it seemed that the waveform emitted by the imprints wasn't exactly the same as the ones before. This was because there weren't 99 of these waveforms responding. Instead, there was only one!
Yet, Mu Chen's mind was astonished by the waveform emitted by merely one imprint. If those 99 spirits of the Heavenly River were the sparkling stars, this particular waveform would then be as bright as the sun, enlightening the world with its endless supply of light.
Mu Chen couldn't help but react with a smile as soon as he noticed the changes. His guess was more or less accurate judging by current situation.
It's pretty obvious that the so called 100th spirit of the Heavenly River cannot be obtained with ordinary methods.