Ye Tian wanted Long Hong to take a leave actually because he hoped Long Hong would bring back more supreme elixirs.
Long Hong's storage bag was already placed on the table, and after using his divine sense to inspect it, he found that the King possessed quite a few valuable items.
Inside were not only spiritual plant seeds, which looked a bit special and might be useful to Jiang Tang, but also an assortment of gold, silver, and other treasures, which might appeal to any vulgar rich man.
In the Cultivation World, people typically use spirit stones, supreme elixirs, advanced pills, mid-grade, and low-grade pills.
Only those with lower status and ability would have use for gold, silver, and treasures.
There were even gemstones and fine goods presumably intended for making jewelry; although men and women in the Cultivation World might decorate their magical treasures with them, these things actually had little practical value.