Why is taking so long.RC909609840CN

I ordered my item 16 days ago and it is a small parcel and when I track my number it says that it is in Beijing, it's been there since 20th of April, I've ordered it at 11th of April and it has been send the next day and now we are 27th of April. Why is taking it so long to come? I've ordered two items at the same time from the same place and the one came before 6 days but this one is taking ages.. that is my tracking number RC909609840CN please somebody tell me what is going on.