This is chinese money. On the 1 dollar bill is yuan, on the 5 and 10 dollars bill is jiao, on the 20 and 50 dollar bill is fen.
Chinese Yuan (RMB) - this isnt the current collection. a 500 bank note is missing and they've updated the 10 with mao on it too.
Ancient China: Qin dynasty and the Chinese Currency - Ancient China Study