Afterward, Chen Nianzhi found Jiang Linglong, Qing Ji, and the others, and said with great delight, "My ladies, the spirit roots in your Earth-Immortal Worlds should be advanced as well."
Chen Nianzhi spoke slowly, a faint smile appearing on his face.
At present, he had a total of twelve thousand drops of innate spirit water. At two hundred drops per spirit root, that was enough to cultivate sixty eighth-rank upper-grade spirit roots.
Within the Earth-Immortal Worlds of Jiang Linglong, Qing Ji, Qu Nishang, Ya Ya, and Yan Ziji, fifty Heaven-Opening spirit roots had been planted.
Chen Nianzhi used ten thousand drops of innate spirit water and nearly exhausted the Heaven-Opening Qi the clan had gathered over the years before finally advancing all fifty Heaven-Opening spirit roots to eighth-rank upper grade.
Such an enormous price naturally brought gratifying gains.
With the Heaven-Opening spirit roots advanced to upper grade, their cultivation speed would greatly increase in the future. It was already set in stone that they would break through to the Earth Immortal Great Perfection before the Dao Tribulation.
Barring any surprises, by using upper-grade Heaven-Opening spirit roots to convert void energy and refining large quantities of Milky Way Star-Sand Pills, they could break through to the ninth level of Earth Immortal in around three hundred thousand years, leaving another two hundred thousand years as a buffer.
Those two hundred thousand years would be enough for them to accumulate to perfection, and they would at least have one chance to attempt a breakthrough into Half-Step Heavenly Immortal.
Moreover, after these spirit roots advanced, they produced a batch of precious spiritual treasures and divine items. By Chen Nianzhi's estimate, the gains brought by each spirit root averaged more than one million immortal sources.
The combined value of these divine items alone exceeded fifty