Metallic coinage, markets, and private merchants appeared in China during the Spring and Autumn era (771–453 bce), and they expanded rapidly during the Warring States era (453–221 bce). These periods were marked not only by rapid economic progress, but also by new conceptualizations of money, markets, and merchants. Both in times of political stability such as the Qin, Han, Sui, and Tang dynasties, and in times of political disunion such as the Warring States, the Three Kingdoms, the Jin, and the Northern and Southern Dynasties eras, money, markets, and merchants performed important economic and social roles. Which kinds of goods, then, served a monetary function from the Warring States to the Tang period? How did people use money, and how and where did they buy and sell commodities? What was the relationship between private merchants and governments? In this chapter, these issues will be examined using transmitted documentary records, archaeological materials, numismatic findings, and recently excavated texts.