1, first highest priority: 1500 reward. Wooden treasure chest, limited to 100, with higher cost performance.

2. Secondly, the third priority: later high-grade stones will be scarce. After the first two purchases, it can be replaced this time. After high-grade stone is replaced, fine iron can be replaced. It is not recommended to replace the bill and red chips, and the cost performance is relatively low.

3. Finally, the gold-plated player: the first 3500 rewards are the most cost-effective, and the basic 1 648 will do.