Moon Dew Grass?
Liang Sheng soon remembered what this spiritual grass was, that it would flower and bear fruit only in the middle of the month, after three years had passed. Moreover, it must be harvested within a time frame of three quarter hours; otherwise, the fruits would naturally wither.
As for what elixirs Moon Dew Grass was used to refine, Liang Sheng did not know. However, this did not affect his admiration for the sect's profound foundation.
Not to mention the Loose Cultivators in the Market, even ordinary disciples from the secular world would probably not know about Lingxi Grass' function as a catalyst if they did not have a family inheritance.
Besides Lingxi Grass, there were other similar spiritual grasses being cultivated, presumably, for their catalytic roles as well.