Ronyinjan's Chapter: Yoni is a World Quest that branches out from another quest called Vimana Agama: Royinjan's Chapter. While it's positioned as a quest, the objective involves finding one of the mechanical components required to complete the overarching Royinjan Chapter.
How to unlock Royinjan's Chapter: Yoni Sumeru World Quest in Genshin Impact
To unlock Rojinyan's Chapter: Linga, you first need to complete the first two parts of the Vimana Agama questline:
Toward the end of Royinjan's Chapter, you will unlock two branches, Linga and Yoni, which players can do in any order.
How to complete Royinjan's Chapter: Yoni Sumeru World Quest in Genshin Impact
Follow the quest marker to the underground area in Devantaka Mountain using the nearby Teleport Waypoint. If you have not unlocked it, you can backtrack by following Vimana Agama: First Chapter, as the hidden Teleport Waypoint was located near Jazari. Head to the glowing spot to continue the quest.
Follow the quest marker to the next location. You can circle the big landform on the left (picture above) to find the glowing spot indicating your destination. Once you're there, you'll find that a boulder blocks the entrance.
Use the nearby Auspicious Branch to summon Dendrograna, then shoot at the boulder circled above to reveal an entrance leading further into the cave. Once inside, you'll encounter a Withering Zone. Get rid of Withering to get an Exquisite Chest reward. Then interact with the glowing Investigate spot to complete the World Quest. You'll obtain one mechanical component to count toward the objective in Vimana Agama: Royinjan's Chapter.
Check out our Genshin Impact Royinjan’s Chapter Linga World Quest guide – Vimana Agama to complete another branch of this World Questline.