If you know Mandarin Chinese there are are about 5-locations in China where you can communicate or do business: https://en.wikipedia.org/wiki/List_of_territoria

If you know Mandarin Chinese there are are about 5-locations in China where you can communicate or do business: https://en.wikipedia.org/wiki/List_of_territorial_entities_where_Chinese_is_an_official_language https://en.wikipedia.org/wiki/List_of_territorial_entities_w... If you know English you can communicate or do business with 67 sovereign states and 27 non-sovereign entities where English was an official language. https://en.wikipedia.org/wiki/List_of_territorial_entities_where_English_is_an_official_language https://en.wikipedia.org/wiki/List_of_territorial_entities_w... If you know French you can communicate or do business with about 29 countries: https://en.wikipedia.org/wiki/List_of_territorial_entities_where_French_is_an_official_language https://en.wikipedia.org/wiki/List_of_territorial_entities_w... If you know German you can communicate or do business in about 12 countries: https://en.wikipedia.org/wiki/List_of_territorial_entities_where_German_is_an_official_language https://en.wikipedia.org/wiki/List_of_territorial_entities_w...