Where is Chenghai?

Chenghai is located at the outlet of Hanjiang River in the Chaoshan Plain in eastern Guangdong Province. It borders the South China Sea to the southeast, Chaozhou to the northwest, Shantou City to the southwest, Raoping County to the northeast, and Nan'ao Island to the east across the sea. The city's terrain slopes from northwest to southeast, and is known as "one mountain, one water, and eight parts of the land." Chenghai is the county (city) with the highest population density in the country, with a total population of 860,000 and a total area of ??402.5 square kilometers.