Lu Yuan's heart ached with pain, for the garbage they had laboriously collected over 155 years had been exchanged for just a single Grotto Heaven!
Profitable?
After calming down and thinking it over carefully, it actually seemed quite profitable.
Because technologies related to Spirit Word, the Green Grass Paradise of the Opium poppy tree, and the idealist knowledge related to Ghosts couldn't be sold.
Ideal Technology has a very peculiar characteristic: you need the corresponding experimental materials to delve into research.
Since the other party doesn't have Opium poppy trees, selling them the knowledge of Green Grass Paradise would be useless.
"So, the only things we can sell are the knowledge of the relics of Meida Civilization, Source Fire Civilization, and Nanyu Civilization."
"Plus, they should be interested in the experiences and sights we've encountered along the way."
Is the knowledge of these three civilizations valuable?