The props in the old man’s ring can be said to be various, among which the [Stone Sword Key] that can help faded people enter hidden areas to challenge hidden BOSS is very important. During the long exploration, you can find it on some special corpses. Or it can be obtained by picking up in relatively secret places, but the speed and quantity of collection are really not enough for exploration. Some merchants also sell stone sword keys, but there are too many reclusive merchants in the old man's ring. Today I will show you Go see where the merchants who sell stone sword keys are and give you a hit list.
Academy: After entering the first bonfire, turn left and go up the bridge. You can find the merchant in the middle of the bridge.
Galeed: Come out of the southern teleportation point on Galeed Avenue, walk towards the red line to the designated point, and meet a merchant from the Wandering Nation.
Broken House: Directly teleport to the Weeping Peninsula - the shabby house of the reclusive merchant. Inside the house is a merchant selling stone sword keys.
Morn City: Teleport to Morn City - in front of the city wall, just walk out.
Volcano: Go diagonally upward from the teleport point to the left until you reach the red box marked in the picture. The merchant is next to the fire.
Blood King: White Mask Branch. On the way to the boss, you will encounter a ridiculously dark cave. Go inside and follow the road to the left. There is a businessman hidden inside.
In addition to these, you can also buy them from Snow Mountain and Great Blessing. These are the ones I have encountered. Currently, each merchant sells them at a different price, ranging from 2,000 runes to 5,000 runes. No wait, there are so many hidden merchants and hard to find. You can share the key merchants you found during your exploration.