Revision:
1. Adjusted the selling prices of medicinal herbs to improve game balance.
2. Modified the quantity of common and rare medicinal herbs that can be excavated to enhance game balance.
3. Tweaked the random probability of obtaining different types of medicinal herbs during excavation, increasing variability.
4. Changed the stamina value display in the excavation interface from text to icons.
5. Added funds display to the excavation interface.