When should I expect my package VIA EMS-China

I order from Chaina quite a bit, and normally it;s It has a prefix-EA and the number was EA000143361CN For some reason this time it has a tracking number with a pre fix- LN221641699CN. I was told by the shipper that it is International First Class. The express EA packages usually arrive around the 5th business day. I am not sure when to expect this package because I have never been shipped one using buisness 1st class. It has a status of Dispatched through Bejing Sort Facility. I would expect the USPS in New York to be the next scan? Please explain this package..