I think your freands are talking about ender cheasts they are like regular cheasts but they are made out of obsidian with theise cheasts you can put stuff in and pull it out at different locations that have them

If it's about money, we all have our own individual "bank" accounts which we can use to buy and sell things. Once you're in a town, the town has a town bank, which will be used for town upkeep payments and other things. Townspeople can donate to the town bank with /t deposit <amount>. Some towns belong to a collective group of towns (a nation), which also has a nation bank (for nation upkeep, etc). Townspeople can give money to their nation with /nation deposit <amount>.