It is Day 4 of the Lost Riches event in Genshin Impact, and Treasure Area Seven is now available in the game. You can find this treasure area at Mingyun Village in Liyue.
Mingyun Village can be found to the southeast of the Wangshu Inn, which is the first major landmark you come across as you arrive in Liyue. It also sits just to the southwest of Dragonspine, the latest area to be added to the game. If you have never visited this area before it is worth exploring, as there are plenty of resources that can be mined here.
Use the Seelie and then walk around the area to find all the treasure, netting yourself 60 Iron Coins that you can use in the event shop to buy all manner of items. You can find all the treasure locations marked on the map below, or use the video above if you need help tracking them down in-game.
The white pickaxe symbols on the above map each denote a treasure location. Remember, you will need to visit Ulman at the Stone Gate in Liyue and speak with him to start the event. He will give you a Treasure Book, and the Treasure Seeking Seelie, and then you will be free to start the event.
Each day, two new areas will appear in the game where you can find the treasure and the Iron Coins, and there will even be special treasure areas as well. The Iron Coins can be used to buy Hero’s Wit, Primogems, Mora, Mystic Enhancement Ore, and a special Seelie from the event shop.