Those extremely rare materials would randomly spawn in various locations once the Great Mystery Continent opened.
Generally speaking, the more dangerous the area, the higher the chance of encountering rare materials.
However, it was not out of the question that such safe places could host millions of Gold Coins' worth of rare materials like Dragon Heart Grass, Nightmare Flower, and Bone Azure.
At the moment, not all members of the Snow Goose adventure team were level 30. However, as the saying goes, "Amass provisions before sending troops," so the Gold Coins for level 30 gear had to be prepared in advance.
Thinking about Gold Coins always gave Lin Da a headache.
Even Lulu, a level 31 Star Realm adventurer, still wore gear from around level 20.
The only decent piece she had was the Silver Ring dropped by the Goblin Prince.
