Since treasures that could instantly turn Rezen into a peerless genius are extremely rare, if he can't find them, he could only rely on resources such as the Rego Weed
While the Rego Weed couldn't turn Rezen into a genius overnight, as long as his consumption of it was regular, the weed could slowly increase his talent
Spirit Plants like the Rego Weed are more common compared to resources that could make a person fly high in an instant. It's easier for Rezen to find them and with the help of his farm, he could have a steady supply of these kinds of resources
As such, Rezen used his mana to scoop the Rego Weed from the ground. He made sure not to damage any part of it and with a telekinetic ability, he removed the remaining soil from it
Rezen stored the Rego Weed in his elixir field, specifically on his farm before searching around where it grows for the seeds