What is the ETA for China Post to USA?RB771113185CN

I have been waiting for this pkg to arrive with various information on other sites. I see that the item has departed Bejing, one site says PEK NULL and on the U.S. Postal end it says orgin post is prepairing package. What is taking so long, When should I expect the item and Why is the status so different, How long are the delays? CONFUSED!

Thank you so much for any help you can give me,

Sincerely,

Kathy