1. This is the tracking of your parcel:
China Post Register Air Mail Tracking System
Parcel No.RS804200239CN tracking result
2016-11-22 00:39:05.0 Electronic Data Received
2016-11-28 21:22:18.0 佛山city Post Office parcel 集邮局 received
2016-11-29 07:07:41.0 Guangzhou Transit Station export security scan
2016-11-29 09:05:05.0 Guangzhou Transit Station export customs cleared
2016-11-29 17:48:46.0 佛山city Post Office parcel 集邮局 customs scan
2016-11-29 17:55:17.0 leaving 佛山city Post Office parcel 集邮局 ，next station 南海

2. Your parcel was ready to be exported out of China but something happen and was return back, this is the translation:

2016-11-29 17: 48: 46.0 Foshan City Post Office parcel philatelic post office customs scan.

2016-11-29 17:55:17.0 Foshan City Post Office parcel Post Office, next station nánhǎi

3. May I suggest you contact seller and ask him to contact China Post to find out where is your parcel right now. Please provide him with the above tracking I gave you so he understand what your are talking about.

Hope this help.