Historically, many of the people who promoted Chinese nationalism were from southern China and did not natively speak Mandarin, and even leaders from northern China rarely spoke with the standard accent. Chiang Kai-shek and Sun Yat-sen were also from southern China, and this is reflected in their conventional English names reflecting Cantonese pronunciations for their given names, and differing from their Mandarin pinyin spellings and . One consequence of this is that China does not have a well-developed tradition of spoken political rhetoric, and most Chinese political works are intended primarily as written works rather than spoken works. Another factor that limits the political implications of dialect is that it is very common within an extended family for different people to know and use different dialects.