What is the purpose of saving money?
Emeralds can be bought at a relatively favorable price through a piggy bank. The emerald in the piggy bank is obtained through certain actions. After physical exertion in an adventure, or completing orders for order trains and freighters in your home, you can accumulate emeralds in a piggy bank. When the emerald in the jar accumulates to a certain amount, you can buy the piggy bank in real currency to get all the emeralds in it. At this point, you can buy a piggy bank immediately, or continue to accumulate emeralds until the piggy bank is full, and the price will not change. Please note that every piggy bank has a time limit for purchase, and it will disappear forever if it becomes obsolete!
