As he took his leave, Lin Yi entrusted Wu Tian Zhang to purchase some high-order Spiritual Herbs for him from the Pill Hall, with twenty thousand Spirit Stones.
These Spirit Herbs are the ingredients needed for the Golden Elixir, and they are often used in other high-order Pills as well.
As for the main Spirit Herb needed for the Golden Elixir, he already had some among the Spirit Herbs he'd harvested after killing the evil demon in the Secret Realm. These should be enough for now.
The medicinal properties contained within the Spirit Herbs grown in the Secret Realm Medicinal Garden are far superior to those cultivated in ordinary fields in the outside world.
He wouldn't let Wu Tian Zhang purchase all the materials for the Golden Elixir on his behalf. While doing so once or twice wouldn't raise eyebrows, too frequent requests might arouse suspicion, even if Elder Brother Wu didn't doubt him, others in the Pill Hall might.
