Guide to Mining
From Hello Kitty Online Wiki
Mining is collecting items from rocks/minerals in the fields. When there is a rock/mineral that can be mined, the cursor will change to an arrow when the mouse is hovered over it. Right-click to mine. Then your character will start to mine, and a bar will appear over the rock/mineral. When the bar fills up, the mining is done and an item (drop) will appear in the inventory. Clicking somewhere else before the mining is finished will cancel the chopping.