My order is still at "Departure from outward office of exchange"

Hi I want to know if you can give me some more details about my order, it's still at "Departure from outward office of exchange". Can you check if it has shipped and how much time does it need to be delivered after the Departure from outward office of exchange. I am worried because in 15days I am leaving the country si I am afraid I won't get my order on time. The tracking number is RC257391746CN