Shennong (神农) , i.e. Divine Farmer is said to have taught the ancients agriculture and medicine. Yan Emperor (炎帝) or the Emperor of the Five Grains (traditional Chinese: 五穀先帝; simplified Chinese: 五谷先帝; pinyin: Wǔgǔ xiāndì), is a legendary ruler of China and culture hero of Chinese mythology who is believed to had lived some 5,000 years ago, http://en.wikipedia.org/wiki/Shennong He made Plow and teach people how to raise crops and fishing. He invented money and market for the exchange of goods