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From Pathfinder Lost Omens Tian Xia Character Guide, which isn't enabled.

Pei Zing Adept

FEAT 2
Prerequisites Prepare Elemental Medicine; expert in Crafting, Herbalism Lore, or Medicine

Access Tian Xia origin

You're practiced at timing preparations to the point where you can treat multiple patients at once. During your daily preparations, you can administer up to two elemental medicines to different recipients.

If you're a master in one of the prerequisite skills, you can administer to up to four recipients, and if you're legendary, you can administer to up to eight.

Pathfinder Lost Omens Tian Xia Character GuideORC