1. This is the full tracking of your parcel:
Parcel No.RI883734105CN tracking result
2016-06-21 20:20:21.0 Dongguan Post Office 跨境电商international parcel center received
2016-06-21 20:21:53.0 Dongguan Post Office 跨境电商international parcel center customs scan
2016-06-21 20:24:10.0 leaving Dongguan Post Office 跨境电商international parcel center ，next station Dongguan center
2016-06-22 10:49:27.0 Guangzhou Transit Station export security scan
2016-06-22 12:54:53.0 Guangzhou Transit Station export customs scan (domestic transit )
2016-06-23 23:31:38.0 Shanghai Transit Station export security scan
2016-06-24 01:43:42.0 Shanghai Transit Station export customs cleared
2016-06-26 21:28:00.0 arrive Shanghai Int'l Airport
2016-06-26 21:28:00.0 arrive Shanghai Int'l Airport
2016-06-27 00:31:09.0 leaving Shanghai Int'l Airport going to next airport/seaport

2. China Post Airmail Parcel Estimate Arrival Time for United Arab Emirates can be found here:
http://track-chinapost.com/China_Post_Arrival_Time_Stat.php

3. I don't see any problem with your parcel. If in 15 days you do not receive your parcel then contact seller and ask him to verify with China Post: 11185.

Hope this help.

1. Yes because that will make around the maximum average for delivery which is 29 days altogether.

2. Also please take note that when the parcel arrive in UAE it goes to the Customs Office, that time does not count in the overall estimated time of arrival.

Hope this help.

Quote from Abhishekcube on July 5, 2016, 16:26
ohk
its Eid Holidays here btw for all Government Sectors
till Sunday

1. So, maybe when the Holiday is finish you will be able to see the parcel on the UAE Post group or it might take a bit longer since they were not to work for a full week.

Hope this help.