As we saw with Inazuma, the Amethyst series weapon blueprints were locked behind various quests, and some even required daily interactions in order to unlock the blueprint. Since this pattern can be seen in Sumeru as well, players can assume that this is the new way to earn the weapon blueprints for the upcoming nations as well. Mondstadt and Liyue provided us with their own weapon series after reaching Adventure Rank, but it is safe to assume that moving forward, we will have to earn the weapon blueprints, which is not a problem because players will gain extra XP and primogems as well for completing these quests.