Hi, what is the "Opening" status ?

In the Status Column :
“Collection” means the post office received the parcel.
“Opening” refers to the process of of Customs check
“Departure from outward office of exchange” indicates the parcel was ready for shipment.
The following status:
RB972585482CN Collection Guangzhou IL Wed, 12 Feb 2014 18:13:00 GMT
RB972585482CN Departure from outward office of exchange Guangzhou IL Thu, 13 Feb 2014 07:45:00 GMT
RB972585482CN Opening Guangzhou IL Thu, 13 Feb 2014 09:02:00 GMT.

Indicates that it has not moved any further. China-Post ships in the cheapest possible way so it is normally rather slow as well.