Despite the efforts to standardize Cantonese romanization, those learning the language may feel frustrated that most native Cantonese speakers, regardless of their level of education, are unfamiliar with any romanization system. Because Cantonese is primarily a spoken language and does not carry its own writing system (written Cantonese, despite having some Chinese characters unique to it, primarily follows modern standard Chinese, which is closely tied to Mandarin), it is not taught in schools. As a result, locals do not learn any of these systems. In contrast with Mandarin-speaking areas of China, Cantonese romanization systems are excluded in the education systems of both Hong Kong and the Guangdong province. In practice, Hong Kong follows a loose, unnamed romanization scheme used by the Government of Hong Kong.