How Many Days Does It Take China Air Post To Ship Items To Nigeria

This Is Alogba Olayinka Am Having Three Package With China Post and I Don't Know Reason Why The China Post Website Stop Updating Those Item Number And The Tracking Numbers Are
RB847234756CN
RB816611157CN
RA035776421CN
So I Will Be Happy If You Can Help Me And Reply My Mail

Thanks
Olayinka