Henan (Chinese: 河南) is a province of the People's Republic of China, located in the central part of the country. Its one-character abbreviation is "豫" (yù), named after Yuzhou (豫州; Yùzhōu), a Han Dynasty state (zhou) that included parts of Henan. Although the name of the province (河南) means "south of the river", approximately a quarter of the province lies north of the Yellow River, also known as the "Huang He".
Henan is often referred to as Zhongyuan or Zhongzhou (中州) which literally means "central plain land" or "midland", although the name is also applied to the entirety of China proper. Henan is the birthplace of Chinese civilization with over 3,000 years of recorded history, and remained China's cultural, economical, and political center until approximately 1,000 years ago. Numerous heritages have been left behind including the ruins of Shang Dynasty capital city Yin and the Shaolin Temple. Four of the Eight Great Ancient Capitals of China, Luoyang, Anyang, Kaifeng, and Zhengzhou are located in Henan.
The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China to protect the Chinese states and empires against the raids and invasions of the various nomadic groups of the Eurasian Steppe. Several walls were being built as early as the 7th century BC; these, later joined together and made bigger and stronger, are now collectively referred to as the Great Wall. Especially famous is the wall built 220–206 BC by Qin Shi Huang, the first Emperor of China. Little of that wall remains. Since then, the Great Wall has on and off been rebuilt, maintained, and enhanced; the majority of the existing wall is from the Ming Dynasty (1368–1644).