1. This is the full tracking of your parcel:
China Post Register Air Mail Tracking System
Parcel No.RF324433463CN tracking result
2016-08-15 16:55:35.0 Electronic Data Received
2016-08-27 09:22:12.0 China Post Group 泰州city parcel process center received
2016-08-27 20:00:00.0 China Post Group 泰州city parcel process center customs scan
2016-08-27 20:13:00.0 leaving China Post Group 泰州city parcel process center
2016-08-29 13:17:46.0 Suzhou Transit Station export security scan
2016-08-29 15:42:04.0 Suzhou Transit Station export customs scan (domestic transit )
2016-09-10 09:22:52.0 Beijing Transit Station export security scan
2016-09-10 10:25:56.0 Beijing Transit Station export customs cleared
2016-09-10 22:53:00.0 arrive Beijing Airport
2016-09-10 23:01:15.0 leaving Beijing Airport going to next airport/seaport
2016-09-12 18:30:00.0 Beijing departure

2. Your parcel is fine it's On Route to Mexico, may I suggest you read this for your country:
http://track-chinapost.com/China_Post_Arrival_Time_Stat.php

Hope this help.