"Ching ching" means "money", the description comes from the sound that money (coins) make when you are counting them. "Bling bling" DOES mean "jewelry", it usually refers to expensive, high quality jewelry with lots of stones (rubies, diamonds, emeralds, sapphires) in it, the description comes from the effect produced when light shines on it because it goes "bling bling, bling bling" to your eye. The meaning of your phrase "you've got the "ching ching" for the "bling bling" means that someone has enough money that they can afford to buy really nice jewelry and not have to worry about spending money. In other words, they have a lot of money. HTH.