this kind of 11 digit number is china post ordinary parcel. This is a slow and cheap service for low value item. China Post will not scan and update its status after it left first post office. so you can not see new status and know where it is now. china post ordinary parcel might take 4 to 1 2 weeks to reach your country.

If you buyer protection is expiring, You need ask seller extend the protection or open dispute to aliexpress.

Quote from XiaoQi92 on September 28, 2017, 07:56
Thanks for reply.. Is it normal if the package not yet arrived at post office in Indonesia and it has been almost 2 months waiting? In case if i still not receiving the package during 12 weeks, what can i do? Is there any website to know whether maybe the package already at Indonesia Postoffice..

you did not read my last message.
1)parcel will take about 4 to 12 weeks to reach your country, so 2 months is still in normal time frame.
2)you can not do anything but waiting at this moment. if your buyer protection is expiring, you should ask seller extend protection or open dispute for lost parcel refund.
3) you can not see new status and know where it is now.