Rules:

1. At least one main item and two minor items are needed to compose a new item. The type of main item and minor items should be consistent, e.g. weapons can only be composed with weapons while armors can only be composed with armors. Weapons include short and long weapons, backswords and bows. Equipment has its category, such as hat, earring, boots, armors, rings and so on.

2. The bonus level of minor items should not be lower than main item but the quality of the main item should be higher than the minor items.

3. If you want to compose an item which has bonus level +6 or more, two gems are needed (gems of any rate).

4. After successful composition, the bonus level of new item will be added by one. The equipment with +9 can't continue being composed. Equipment without bonus level only acts as main item, it can't be the minor item.

5. You can always compose new items successfully.