Firstly, this is really easy.
But alot of people havn't thought of it, so i thought i'd post it here.
You've found a potential buyer for one of your accounts, and you want to know if he's chinese (He's a scammer with 99.9% certainty)
Follow these steps.
The same applies to other email logins.
Why is this?
They have cookies which saves their default language on the different sites, or their chinese IP's give them away (If they didn't use a proxy to create the email).
So, when you get one of these, scam the hell out of him. :wave: