卡牌等级系统 (The Card Rating System)

​升级所消耗的代币以及失败的卡牌进行销毁

Tokens used to upgrade and failed cards are destroyed

如何升级？

第一步打开我的背包-点击卡牌-升级授权-升级

How to upgrade?

Step : Open my backpack - click the card - Upgrade Authorization - Upgrade