By 5 16, you should be able to receive the daily work of the jewelry trainer (storm city LM, Orgrimmar BL). After the daily work, you will be rewarded with a brand, and then use these brands to change the formula. The NPC who changed the formula is also in that room. The first few formulas are special for jewelry (showing that the cut stone is bound after being picked up).

PS: A brand is rewarded for daily tasks. Generally, there are 3-5 formulas, that is, a formula needs to be changed for 3-5 days, so be sure to pay attention to the choice of formula when changing. For example, if you are DK and you are T, the stones of parry, evasion, proficiency and endurance should be exchanged first, and the strength, quickness, proficiency and crit of DPS should be exchanged first.

Wow.duowan.com has a detailed career introduction, which will tell you what attributes your career needs to maximize DPS or T, and the pressure will be less.

What questions can you ask me? I hope these are helpful to you.