Genshin Impact 4.0 update has brought a brand new region Fontaine, and with that, a ton of new quests have also been available for you to complete in order to progress in the story and earn rewards. These include Reputation quests in which you will have to help Fontaine's people, defeat the enemies in the area, etc., in order to get special rewards.
To be able to access these quests, you will have to unlock Fontaine's Reputation System, and here's how to do it.
How To Unlock Fontaine Reputation System In Genshin Impact
In order to unlock Fontaine's Reputation System in Genshin Impact, you will have to complete the latest Archon Quest Chapter IV: Act I "Prelude of Blancheur and Noirceur," and in order to do it, you will have to finish all of the previous Archon Quests and reach Adventure Rank 40 or above.
Once you do it, a new World Quest called Steambird Interview will be available that you need to complete to ultimately unlock Fontaine Reputation System.
Start this quest, and the first thing that you need to do is talk to Euphrasie, Chief Editor of The Steambird, and her location has been marked on the map below.
After a few dialogues, the Reputation System will get unlocked for you, and you will now be able to check out the reputation quests, exploration progress, etc., and complete them to earn rewards.