Hi, Chinese postcrossers. I need your help. I received this cover from China:
The signature says Anne, but there are no other hints to let me know who Anne is. No address, no username.
Postcrossing staff can’t help me because I can’t even tell them where the card comes from.
This is the stampmark. What town is it?
Is anybody here who can tell me? I can’t thanks Anne for her nice card inside.
Thanks and please, reply in English. I’m Italian 
Cristina
Hello Cristina,
I think this is Xin’an. Hope this helps.
Hi according from the postmark, it’s from Guangdong (province) Shenzhen (city)
@tangqiuning Tang any suggestions? Your China post and English expertise very welcome for this Mandarin problem
It’s a letter from Guangdong province, Shenzhen city, Baoan district.
Xin’an post office is very large. The number on the postmark is the serial number.
I hope this will help you.
This envelope send out from Shenzhen city in 2 July 2021. Other message is unknown 
Thanks so much to all of you. Now I’m trying to find Anne ! 
If you did not swap directly with Anne,perhaps it was from postcrossing.She just forgot to write pc ID?You could use information below to try "find ID"in postcrossing.
Information:
time:2021.7.2
from.China.Guangzhou.Shenzhen
@Sheng_, thank you but I tried to do what you said, no sign of any Anne from Shenzen in official Postcrossing! I found a girl called Anne who might be the one I received a card from. I wrote to her and now I’m waiting for an answer. I keep my fingers crossed. Anyway, thank you again for all your kindness.
Did you try the Postcard ID search with all the information you received here?
https://www.postcrossing.com/receive/unknown
yes, I did it and I had the same answer as before 
And the Anne I contacted said “It was not me”.
