A document/letter sent from Chicago, USA to Shanghai China has been stuck in transit for several weeks. According to tracking number it arrived in Shanghai on Sept 23. When I ask China post, they can't find any info on it. When I call USPS (the sender) they can't track it since it has apparently arrived in China
I sent a letter to Qui Minnan at the following address: Ren Yu Lan, 491 South Chang'an Road, Xi'an 710061,China but my letter was returned to me with the message that my letter could not be delivered, why is that and should I try again?