There are three different components to Yulgang's crafting system: enchantment, enhancement and essence. All three systems have different success rates based on the craft level of the item.

Enchantment allows a player to take a sapphire or emerald gem and transfer the gem's abilities to a piece of equipment. Sapphires are used for weapons and Emeralds are used to enchant defensive equipment. Enchantment costs gold for each time an item is enchanted, whether it succeeds or fails. When an enchantment attempt fails, the gem is lost but the item is retained, along with its previous enchantment it had (if any). If the enchantment attempt succeeds, the item name turns blue and the options that were embedded in the gem are transferred over to the item. Equipment and weapons may be successfully enchanted up to four times. Armor can be enchanted up to two times. Accessories cannot be enchanted. A player can apply as many gems to enchant a weapon until all four lines are maxed. The rate of success after the second enchant is very low. Optional luck charms that increase enchanting success by a percentage are sold by the NPCs.

In the enhancement system, a player uses a Ruby to upgrade the item. For every successful enhancement, it increase a weapon¡¯s attack by +6 or a piece of defensive equipment¡¯s defense by +3. Once an item is enhanced, it cannot be enchanted. There is a cost for every enhancement try. The number of rubies used to enhance an item depends on how many enchantments it has. For a clean item, it costs one ruby to enhance. An item with two enchantments will cost two rubies. And items with three or more enchantments will cost three rubies. You may enhance an item up to 10 times, however success rates are greatly reduced after the 5th enhance. The enhancement level is displayed to the right of the item name in brackets. A failed enhancement attempt results not only in the loss of the gem, but also the loss of the item as well. Optional charms sold in the Premium Shop (nCash) can prevent an item from breaking if the enhancement fails. Luck charms that increase enchanting success by a percentage are sold by the NPCs and in the Premium Cash Shop.

Applying essence uses amethyst gems. Amethysts give a weapon a special glow and embeds a property ranging from increased attack, defense, rage, accuracy, poison-ability. There are six different types of amethysts: water (blue-white), fire (red), wind (green), poison (purple-white with skulls), inner energy (pale red/pink), and physical energy (orange). Each essence has different effects on equipment, and their effects also differ when used on a weapon or on defensive equipment (among defensive equipment, essence may only be applied to robes). The same essence may be applied on an item up to 10 times. A failed attempt will result in the loss of the gem and in an initialization of essence statistics of the item. Amethyst gems must be bought from Holly in Central Valley town. There is no other way to obtain an amethyst except from Holly or a player selling it from their personal shop.