Quote from TechMan on April 19, 2016, 16:01
Its status is stuck since 5th April 2016. What's going on?

The last tracking is as follows:
2016-04-05 15:39:34.0 Wuhan Transit Station export customs scan (domestic transit )

According to other post on this site, this may mean the parcel has problem to catch airline space or can not pass Customs check.

Also please read the following for your country:
China Post Airmail Parcel Estimate Arrival Time
At this location:
http://track-chinapost.com/China_Post_Arrival_Time_Stat.php

Hope this help.