For the people of Qin, it was a pity that almost all the spiritual pulse arrays were not designed for cultivators at the divine sea stage.
On one hand, after the great destruction of the ancient era, a large number of techniques had been lost and regressed, resulting in the loss of such techniques. Other than that, there was another very important point, which was the relationship between supply and demand.
If there was no need, there would naturally be no corresponding motivation.
Whether it was to redevelop this method or to find and restore similar technology from ancient times, it was obviously not an easy task.
In the current world environment, before Lu Qing's breakthrough, there were no divine sea cultivators in the entire world. What was the point of making such a high-level thing?
Without any benefits, no one would do such a thing.
