During the exploration of the southern part of Enkonomiya you will come across a small island on which you can find a similarly small and quite simple puzzle. 

Solving the puzzle with the wall and elemental barrier on the small island of Enkonomiya in Genshin Impact, you will be able to get to the Precious Chest!

Where to find the puzzle 

You will see the exact location in the picture below. On this island there will be a small elevation with ruins - look for the day-night switch mechanism and the blue ghost wall there.

Solution to the puzzle with the wall and Precious Chest

You need to do the following:

1. To open the wall, activate Eternal Day;

   

2. Hit the day mechanism until the open part of the wall is looking towards the abyss;

   

3. Approach and take the coral light;

   

4. Activate Eternal Night;

   

5. Go around the building and enter through the hole in the wall. Now hit the mechanism until the open part of the wall is looking at the chest.

   

And that's it! Good luck.