Please do not add the postfix “City” to the name:en tag of Bà Rịa. According to the naming convention, city names all over the world in OSM simply include their name, without “City” in that name:en tag. For example, Hanoi (not Hanoi City), Đà Nẵng (not Đà Nẵng City), Seoul (not Seoul City), San Francisco (not San Francisco City). The exceptions would be when the word “City” is itself part of the name, like Salt Lake City, Kansas City, Jefferson City… You can add another tag, official_name:en and fill in "Ba Ria City" if you wish.

Thanks for your understanding.