Quote from Francesco84 on August 17, 2016, 21:05
Help , where is my pack ? RS173676639CN from 14 August no trace more ...

1. This is the tracking I could find for your parcel:

China Post Register Air Mail Tracking System
Parcel No.RS173676639CN tracking result
2016-08-12 22:35:17.0 佛山city Post Office parcel 集邮局 received
2016-08-12 22:52:50.0 佛山city Post Office parcel 集邮局 customs scan
2016-08-13 08:42:05.0 leaving 佛山city Post Office parcel 集邮局 ，next station 南海
2016-08-13 13:06:37.0 Guangzhou Transit Station export security scan
2016-08-13 14:11:50.0 Guangzhou Transit Station export customs cleared
2016-08-14 22:42:00.0 arrive Guangzhou Airport
2016-08-14 22:43:39.0 leaving Guangzhou Airport going to next airport/seaport

2. I also found this:

International Mail# RS173676639CN Tracking Result
Summary
Tracking number Origin Destination Status
RS173676639CN CHINA ITALY On route

History Detail
Local date/time Activity Location Remarks
12-Aug-2016 22:35 Received by Post Office 52803200
13-Aug-2016 16:40 Departure export customs GUANGZHOU

3. May I suggest you read this for Italy:
http://track-chinapost.com/China_Post_Arrival_Time_Stat.php

Hope this help.