Porcelain originated in China, and 'china' is the common name of the product. By the Eastern Han dynasty period (196–220 AD) glazed ceramic wares had developed into porcelain. Porcelain manufactured during the Tang Dynasty (618–906 AD) was exported to the Islamic world, where it was highly prized. Early porcelain of this type includes the tri-colour glazed porcelain, or "sancai" wares. Porcelain items in the sense that we know them today could be found in the Tang Dynasty, and archaeological finds have pushed the dates back to as early as the Han Dynasty (206 BC – 220 AD). By the Sui Dynasty (581–618) and Tang Dynasty (618–907), porcelain was widely produced.