Lin Yi secretly praised him, but he could not help clicking his tongue in amazement.
More than forty thousand Heart Source Grasses had only fetched him two Spirit Source Stones. The Palace Master had probably deliberately given him extra compensation because he did not wish to owe him a favor.
With the deal concluded, the figure seemed to add casually, his tone as placid as ever. "Our Heavenly Spirit Palace has a long-term need for Heart Source Grass. If your Small World has abundant Spirit Rhyme, then cultivate and plant it with all your strength. Perhaps in a hundred years, perhaps in a thousand, I will return here to purchase more."
Lin Yi could not help finding this rather strange.
Although Heart Source Grass had demanding cultivation requirements, if it were grown extensively within an internal world, there should be no shortage of it.
After all, it was merely a fourth-order Spirit Herb. If Lin Yi watered it with the red-grade Growth Spirit Fluid distributed by Starfall Academy's Seventh Branch, he could probably harvest a new crop within days.
This man's origins were so mysterious. He commanded an Outer Realm force like the Heavenly Spirit Palace and possessed an Ancient Giant Ship capable of crossing the Tidal Spirit Sea. Why would he need Lin Yi's tiny Small World to grow it specifically for him?
Could it be that the cultivation method this man practiced was not the World Law?
Perhaps even the force he belonged to was fundamentally incapable of opening up internal worlds.
At that thought, Lin Yi's mind stirred. He concealed the contemplation in his eyes, cupped his hands, and said loudly, "You may not know this, but Heart Source Grass has exceedingly harsh cultivation requirements. Not only must it be nourished with pure Spirit Rhyme, but it