Unfortunately not a sole Chinese phenomenon. A friend once lived in Paris for a couple of years and before the first Christmas he bought an expensive bottle of Cognac and sent it by regular French post service to his dad. It never arrived. When he inquired at the post office, they asked him twice if he really sent that package by normal post service, and then pretty much asked him what he had expected. Last Christmas my brother in law sent his godchild a package with a letter, some sweets and a bracelet from the US. The package arrived 6 months (!) later, it was obviously opened and the bracelet was missing.
And now I expect my Pimax to arrive around... Christmas time.