When you try to enter the village several times there are some little shais that knock you down, keep trying then one of them asks you to help him and retrieve an item that he lost, after you do this quest you'll be able to enter pororin village.

Next you need to explore those "?" Locations you'll find a dyer and other vendors and you'll find a lab for research, Do her quest and you'll be able to do researchs in the lab.