Re: imagine if the chinese were ashamed of themselves.
Peace Dost Khan
The fact that Mumbai and Bombay are not in Urdu doesn’t change the principle - the OP wrote Chinese and Mandarin to prove a point about Urdu and Arabic … So I use place names native and non-native Mumbai and Bombay to demonstrate my point … it was not about the Urdu language so much as it was about the interchangeability of terms in languages and names of things.
That “so” and “soN” explanation forgive me but sounds like complete nonesense … people in dialogue use “so” the English word instead of “phir” or in how it is pronounced in Hindu “fir” … or in Punjabi “fere” …
Just stand there and let me take the Ala-e-tasweer out and take your picture … even a tool and a machine can be interchangeable terms. 
My point still stands … even if your semantics lessons was true - my point would still be correct … Ramzan in Urdu - English has standardised the term from the original Arabic. Ramzan is a vulgarisation of the original. And Urdu is a vulgate language as beautiful as it might be.