Standardisation of place names in Chinese
Different regions governed by different governments. Translations in Taiwan usually doesn't follow Chinese Mainland

Different regions have different dialects. A transliteration in Mandarin might sound completely different in Cantonese


We still don't have a complete Standardization of place names in the Chinese language.
If a foreign country declares its official Chinese transliteration, it will be the standard, If a foreign country doesn't declare its official Chinese transliteration, then it is up to the Chhinese regional governments to decide