Where to go after getting the map and the decoder in aqw?

If you refer to the map dropped from the dragon in the j6 aria, you click on the map and it should show a section of the sand sea. scroll over the map until the decoder goes from red to green. click that aria and you will discover the saloon. after you do everything you need to do at the saloon, click the map again. like before, scoll over the map but this time your looking for the quadanets that J6 gave you. once you click this aria, you will find the hyperium.