If you have a large number of people or you spend money on buying gold or selling cards, it is ok to learn jewelry, and the benefits brought by jewelry are also ok, but the initial investment is also large. A conservative estimate is to prepare 4000 to 5000 gold. Actually, I personally think it's better to learn alchemy and collect herbs without spending money. And after alchemy reaches 450, you can order gems every 20 hours. If you specialize in renovation, there is still a chance of explosion. The most time I exploded was five, and now it's 100 plus one gold, and five is more than 500 gold, but the cost is only 30 gold.