the subject matter, the writer's level of education, etc. As many legal documents are still written in Classical Chinese, which is not easily understood by the general public, a group of Taiwanese had launched the Legal Vernacular Movement hoping to bring more Vernacular Chinese into the legal writings of the Republic of China. Taiwan is officially multilingual. A national language in Taiwan is legally defined as "a natural language used by an original people group of Taiwan and the Taiwan Sign Language". As of 2019, policies on national languages are in early stages of implementation, with Hakka and indigenous languages designated as such. Religion The Constitution of the Republic of China protects people's freedom of religion and the practices of belief. Freedom of religion in Taiwan is strong and ranks high at 9.2 in 2018 according to World Bank. In 2005, the census reported that the five largest religions were: Buddhism, Taoism, Yiguandao, Protestantism, and Roman Catholicism. According to Pew Research, the religious composition of Taiwan in 2020 is estimated to be 43.8 per cent Folk religions, 21.2 per cent Buddhist, 15.5 Others (including Taoism), 13.7 per cent Unaffiliated, 5.8 per cent Christian and 1% Muslim. Taiwanese aborigines comprise a notable subgroup among professing Christians: "...over 64 per cent identify as Christian... Church buildings are the most obvious markers of Aboriginal villages, distinguishing them from Taiwanese or Hakka villages". There has been a small Muslim community of Hui people in Taiwan since the 17th century. Confucianism is a philosophy that deals with secular moral ethics, and serves as the foundation of both Chinese and Taiwanese culture. The majority of Taiwanese people usually combine the secular moral teachings of Confucianism with whatever religions they are affiliated with. , there were 15,175 religious buildings in Taiwan, approximately one place of worship per 1,572 residents. 12,279 temples were dedicated to Taoism and Buddhism. There were 9,684 Taoist Temples and 2,317 Buddhist Temples. In Taiwan's 36,000 square kilometers of land, there are more than 33,000 places for religious (believers) to worship and gather. On average, there is one temple or church (church) or religious building for every square kilometer. The high density of place of worship is rare in the world, and it is the area with the highest density of religious buildings in the Chinese-speaking world. Taiwan is also the most religious region in the Chinese-speaking world. Even for Christianity, there are 2,845