Guangdong
Guangdong (; formerly romanised as Kwangtung or Canton Province) is a province in South China, on the South China Sea coast. Guangdong surpassed Henan and Shandong to become the most populous province in China in January 2005, registering 79.1 million permanent residents and 31 million migrants who lived in the province for at least six months of the year; the total population was 104,303,132 in the 2010 census, accounting for 7.79 percent of Mainland China's population. This also makes it the most populous first-level administrative subdivision of any country outside of South Asia, as its population is surpassed only by those of the Pakistani province of Punjab and the Indian states of Bihar, Maharashtra and Uttar Pradesh. The provincial capital Guangzhou and economic hub Shenzhen are among the most populous and important cities in China. The population increase since the census has been modest, the province registering 108,500,000 people in 2015.
China
China has over 160 cities with a population of over one million, including the seven megacities (cities with a population of over 10 million) of Chongqing, Shanghai, Beijing, Guangzhou, Tianjin, Shenzhen, and Wuhan. By 2025, it is estimated that the country will be home to 221 cities with over a million inhabitants. The figures in the table below are from the 2010 census, and are only estimates of the urban populations within administrative city limits; a different ranking exists when considering the total municipal populations (which includes suburban and rural populations). The large "floating populations" of migrant workers make conducting censuses in urban areas difficult; the figures below include only long-term residents.
Since 1986, compulsory education in China comprises primary and junior secondary school, which together last for nine years. In 2010, about 82.5 percent of students continued their education at a three-year senior secondary school. The Gaokao, China's national university entrance exam, is a prerequisite for entrance into most higher education institutions. In 2010, 27 percent of secondary school graduates are enrolled in higher education. This number increased significantly over the last years, reaching a tertiary school enrollment of 48.4 percent in 2016. Vocational education is available to students at the secondary and tertiary level.