Genshin Impact is a game with a very deep plot. In the game, players will inevitably want to know the functions of the dark green feathers in "Genshin Impact". Players who don’t know how to advance can refer to this article to find the game option that best suits them.
1. The dark green feather ornament is related to the "ghost ship" Spensian that we found in the Meiluxin mission [Lonely Sail Shadow]. It is used to unlock hidden achievements.
2. As shown in the picture, after we completed all three acts of the world mission "The Safety of Narcissus", we came to the wooden box here again and interacted with the "broken wreckage of the Spensian".
3. After interaction, you can return the mission prop "Dark Green Feather Ornament" obtained in "Ann of Narcissus Act 2".
4. After returning the "Dark Green Feather Ornament", you can unlock the hidden achievement "The Hope of Fulfilling Duties".
I don’t know if your questions have been solved after reading the editor’s guide about the functions of the dark green feather ornaments in “Genshin Impact”. If not, I hope you can tell me in the comment area what failed to solve. So that the editor can continue to update this guide in the future to help more players.