How to pronounce 南京 in Cantonese (8 out of 9):

南京城之下改嘅一個名。
Names are changed from Nanjing to Nanjing.

Cantonese Sentence Breakdown

tung4
and
南京 naam4 ging1
Nanjing
sing4
city walls
city
town M: 座zuò [座]
道dào [道]
个gè [个]
municipality
之下 zi1 haa6
under
goi2
to change
to alter
to transform
to correct
another
to improve
to remodel
to turn to
a surname
koi3
indignant
generous
to sigh (with emotion)
一個 jat1 go3
a; one
ming4
name
noun (part of speech)
place (e.g. among winners)
famous
classifier for people
rank
title
position
fame
reputation