Mainland China and Taiwan use Standard Mandarin in most official contexts. The PRC in particular is keen to promote its use as a national lingua franca and has enacted a law (the National Common Language and Writing Law) which states that the government must "promote" Standard Mandarin. There is no explicit official intent to have Standard Chinese replace the regional varieties, but local governments have enacted regulations (such as the Guangdong National Language Regulations) which "implement" the national law by way of coercive measures to control the public use of regional spoken varieties and traditional characters in writing. In practice, some elderly or rural Chinese-language speakers do not speak Standard Chinese fluently, if at all, though most are able to understand it. But urban residents and the younger generations, who received their education with Standard Mandarin as the primary medium of education, are almost all fluent in a version of Standard Chinese, some to the extent of being unable to speak their local dialect.