Collecting Astrite will ultimately lead you to the crux of the gacha game, banner pulls.
What is Astrite?
Tides is the gacha currency that will buy you banner pulls, unlocking new characters and items.

Patience you must have.
One simple way to farm Astrite is bycompleting your daily Activity Quests.
In fact, completing daily, weekly, or monthly Guidebook missions all reward you with Astrite.

In fact, focusing onraising your Union Levelis another way to farm Astrite.
Next up,exploration.
In Jinzhou, there is a Pioneer Association that rewards you for exploring different regions of the map.
As you explore, you’ll also come acrosssupply chests.
When you open these chests, there’s a chance they’ll have Astrite in for you to collect.