to thousands of Cantonese-speaking citizens in demonstration on the street. In both mainland China and Taiwan, the use of Mandarin as the medium of instruction in the educational system and in the media has contributed to the spread of Mandarin. As a result, Mandarin is now spoken by most people in mainland China and Taiwan, though often with some regional or personal variation from the standard in terms of pronunciation or lexicon. In 2020 it was estimated that about 80% of the population of China could speak Standard Mandarin. The Chinese government's general goal is to raise the penetration rate to 85% by 2025, and to virtually 100% by 2035. 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. In the predominantly Han areas in mainland China, while the use of Standard Chinese is encouraged as the common working language, the PRC has been somewhat sensitive to the status of minority languages and, outside the education context, has generally not discouraged their social use. Standard Chinese is commonly used for practical reasons, as, in many parts of southern China, the linguistic diversity is so large that neighboring city dwellers may have difficulties communicating with each other without a lingua franca. In Taiwan, the relationship between Standard Mandarin and other varieties, particularly Taiwanese Hokkien, has been more politically heated. During the martial law period under the Kuomintang (KMT) between 1949 and 1987, the KMT government revived the Mandarin Promotion Council and discouraged or, in some cases,