The main resources obtained in the Valley of the Sacred Moon are Immortal Stones, engraving materials, weapon and armor molds, and Celestial Seals. Let’s go step by step: how to get there, what loot you receive, and what to do with it.
You can enter the Valley in three ways: by using an Inexhaustible Teleport Rune, via the Dream Stone by selecting the desired dungeon in the right-hand menu, or through the direct entrance. For the second option, use a teleporter master or the rune to travel to the House of Arrows (the TP point slightly above the level-59 dungeon). Then fly up or speak to the NPC Heavenly City Emissary, who will send you upward.

After that, you will see the entrance to the dungeon — simply fly into the arch shown in the screenshot.

Once inside the dungeon, you will see three NPCs. The one we are interested in is the one in the middle — “TP to the Final.”

The main farming bosses are located on both sides of a small lake.
The first one is the Contaminating Lord of the Abyss, whose feature is removing buffs at certain stages of his health. It’s important to note that this boss deals magical damage even at close range. Therefore, if you lack magical defense, you can use the Alchemist’s Sphere or your own defensive buffs.
If the boss removes buffs twice and is still alive, his next attacks may become too strong, so keep an eye on your HP. If your damage is insufficient for a quick kill, you can fight him together with a priest (the sphere won’t be dispelled). He also periodically applies the “Slow” debuff, which reduces movement speed. This boss is also required for the quest “Imperial Edict,” if it was received in the Valley of the Sacred Moon.

Loot from this boss:
• Small Energy Bag (grants Global Energy when opened)
• Small Immortal Bag (grants Immortal Stones when opened)
• Random Nirvana Weapon Mold
• Random Nirvana Armor Mold
• Celestial Seal (required for crafting the cloak)

At the boss’s death location, an NPC will appear who allows you to summon the boss again using Natural Quintessences (available in the Pocket Shop or Marketplace).
The next boss, also required for the quest “Hero’s Path,” is Nine Dragons.

Depending on your position, the boss can use both magical and physical attacks. Like the previous boss, he applies the “Slow” debuff. The boss is relatively easy to kill, but if your defenses are too low, you can place a priest in the Sphere (Aura of Recovery).

Loot from the boss:
• Small Energy Bag (gives Global Energy when opened)
• Small Immortal Bag (gives Immortal Stones when opened)
• Ancient Flint (engraving resource)
• Bright Flint (engraving resource)
• Common Flint (engraving resource)
• Celestial Seal

Nirvana Weapon and Armor Molds
By right-clicking on a dropped mold, you receive a random mold for crafting. Armor molds are color-coded, indicating which classes they suit best depending on required stats (int, heavy, light). Armor can be crafted at the Dragon City forge “Armor of Samsara” and later upgraded.

Additionally, crafting and upgrading armor requires “Miracle Crystals,” while creating lunar weapons requires “Perception Crystals.” Their main sources are the “Rebirth Hall: Nirvana” dungeon or ten-minute bosses.

Weapons are crafted in the nearby forge “Samsara Weapons - Moon 1.”

Engraving
To use the resources from the second boss in the Moon (Nine Dragons), you need to approach the Engraving Master. He is located in the west of Dragon City or in the center of the City of Origins. At this NPC, you can exchange dungeon resources for “Engraved Blades” in the “Moon” tab.

For each type of resource, you will receive from 6 to 11 blades, which can then be used at the same NPC to engrave equipment. There are three tabs in the engraving window: weapons, armor, and jewelry. For weapons, engraving always gives the same stat depending on the choice (magic attack +150 or physical attack +150). Engraving armor grants a random stat from the available options. Engraving necklaces and belts also provides random stats. Engraving rings has several options: you can either get random stats or choose the ones you need.

During the engraving process, you can keep the previous stats or choose new ones. You have 30 seconds to decide. In the window that appears, the “Save” button allows you to keep the current stats (on the left), while the “Change” button lets you select the new ones (on the right). After making your choice, you will be offered another chance to try your luck using the “Create Again” button.

Point
Immortal Bags dropped from both the first and second bosses can be exchanged with the NPC Mentor Global for Immortal Stones. You can find the Mentor in any major city. Mirages can be exchanged there for Golden Eggs, which in turn can be exchanged for Dragon Orbs 1–3. Higher-level orbs can later be crafted at any Alchemist. At the same NPC, you can also exchange Global Energy Bags.
The items of interest are highlighted in the screenshot below.