1. This is the full tracking of your parcel:
China Post Register Air Mail Tracking System
Parcel No.80162307791 tracking result
2016-08-02 10:21:29.0 Electronic Data Received
2016-08-05 03:24:10.0 China Post Group 浙江省Yiwu city 邮购配送公司 received
2016-08-05 04:10:00.0 China Post Group 浙江省Yiwu city 邮购配送公司 customs scan
2016-08-05 04:11:00.0 leaving China Post Group 浙江省Yiwu city 邮购配送公司
2016-08-10 04:10:00.0 计划going to next airport/seaport ，计划航班号GA895-714，计划起飞时间10:05

2. And the other one full tracking:
China Post Register Air Mail Tracking System
Parcel No.80170110779 tracking result
2016-08-11 10:05:16.0 Electronic Data Received
2016-08-12 16:35:48.0 China Post Group Nanjing city post parcel 局 received
2016-08-12 16:57:00.0 China Post Group Nanjing city post parcel 局 customs scan
2016-08-12 17:08:00.0 leaving China Post Group Nanjing city post parcel 局
2016-08-14 16:57:00.0 计划going to next airport/seaport ，计划航班号MU727，计划起飞时间15:50

3. As you can see both parcels have left China to Australia. The number you are seeing is the flight number GA895-714 and flight number MU727. By now it must be in the hand of Australian Customs Office. When they will be finish with the Customs it will be given to Australian Post for delivery just like a normal letter. Unfortunately you will not be able to track the parcel in Australia.

Hope this help.