Names can be faked, and even real names are not a great indicator.

Unless you have some very specific cultural knowledge you could not make even vaguely useful deductions about my location, nationality, culture, ethnicity etc. from my name. I get a lot of wrong guesses though!

We're way too global now for this to be more than a tiny extra signal. People move around, families preserve names.

Also nobody checked that person's id, so "Jia" is only slightly more meaningful than "ghrssbitrvii".

Since his only appearance outside of github and git repos is on some Taiwanese blogs, can we please change all occurances of China to Taiwan please?

And some others hints at Eastern Europe, comparing the timezones. Taiwan ist still the strongest hint though.