English (Source)
Your commander has abilities which can be used for energy instead of gold. Energy is gained through a commander-unique resource. Hover above the resource bar to see how your commander gains resources.
Chinese Translation
你的指挥官拥有一些技能，可消耗能量而非金币来使用。能量通过指挥官专属资源获得。将鼠标悬停在资源条上方以查看你的指挥官如何获得资源。