When Di Tou was about halfway through the second vial, he realized he had reached the end of the crystal growths in the underground river. Standing still and stretching, Di Tou looked forward to seeing that although the water continued forward, and there was still quite a large stretch of the cave, there were no more Soul Sounding Crystals growing on the walls, the floors, or the ceiling.
He had finally managed to finish this stretch! Of course, when he said that, what he meant was he finally managed to collect all of the Soul Sounding Crystals that grew off the ground that weren't close to the river bank, on the wall, or on the ceiling.
There were still many crystals in those spots, not to mention on the other side of the river and back where Wu Kong and Jian Xiao Yu were still working.
