[thaumasiotes]

The Peking / Beijing thing is indeed the same thing you see in Canada / jianada. Peking / Nanking / etc. do not come from Mandarin.

Read your own link:

> The transcription of the EFEO did not borrow its phonetics from the national official Standard Mandarin. Rather, it was synthesized independently to be a mean of Chinese dialects, and shows a state of sounds a little older in form

[tasogare]

Reading is good, understanding the implications is better. Standard Mandarin is newer than the period at which Canada would appear as a loanword in Chinese, so of course it is not drawn from that language. But that doesn't mean it is Cantonese either. Moreover, I wrote Mandarin (a Chinese languages with a variety of dialects), not Standard Mandarin (the language taught at school).

In particular, for the Beijing case, South Mandarin is involved: https://en.wikipedia.org/wiki/Chinese_postal_romanization#Ma....