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.
Expressways of Jiangsu
The Chinese eastern coastal province of Jiangsu has an expansive network of national and provincial-level expressways. At the end of 2010, the province had of expressways, including of national expressways and of provincial expressways, and by 2020, the province expects to have of national and provincial-level expressways.
Expressways in Jiangsu province (and the rest of China) are designated with a letter prefix, which represents whether it is a provincial or national-level expressway, followed by a two-to-four character alphanumeric designation. The letter prefix G, which stands for Guodao (), literally meaning "national road", is used for national expressways, and the letter prefix S, which stands for Shengdao (), literally meaning "provincial road", is used for provincial expressways. National expressways are numbered according to the National Trunk Highway System numbering rules. In Jiangsu, the provincial-level expressways are assigned numbers as follows:
There are 36 provincial expressways currently completed, under construction, or in the planning stages as part of the provincial expressway plan. These include 13 north-south expressways, 9 east-west expressways, and 14 branch lines, given numbers greater than 70. In addition, there are 14 national-level expressways that are entirely in or will pass through the province. In 2013, some of the provincial-level expressways have also been upgraded as national expressways and given national-level expressway numbers.