According to the tracking result, your package has been in your country since August 16. As it has been handed over to Saudi Post, you'd better contact Saudi Post to ask when they could deliver it to you.
Tracking information: 2017-08-16 08:38 --Central Post in Riyadh office - AR RIYADH, Processed for Clearance 2017-08-16 08:37 --Central Post in Riyadh office - AR RIYADH, Arrived To Office 2017-08-12 17:47 --GUANGZHOU EM, Departed From OutWard office of exchange to - RYIADH 2017-08-11 23:30 --510000, Picked up
Tracking information:
2017-08-16 08:38 --Central Post in Riyadh office - AR RIYADH, Processed for Clearance
2017-08-16 08:37 --Central Post in Riyadh office - AR RIYADH, Arrived To Office
2017-08-12 17:47 --GUANGZHOU EM, Departed From OutWard office of exchange to - RYIADH
2017-08-11 23:30 --510000, Picked up