Here's why:
* Metaphor: A metaphor is a figure of speech that compares two unlike things without using words like "like" or "as." In this case, it compares "good wishes" to a "treasure chest."
* Treasure Chest: A treasure chest is a physical object that holds valuable items.
* Good Wishes: Good wishes are intangible and represent positive feelings or hopes.
The metaphor creates a powerful image, implying that good wishes are valuable and precious, just like the treasures found in a chest.