The image is a text-based slide with a yellow background and black text. The text reads "Qin and Han (221 BC - 220 AD) After unifying the whole country in 221 BC, the first emperor of the Qing dynasty ordained gold, the superior currency, and the Banliang coin, the inferior currency, as the legal money of the country. Banliangs coins and unwrought weighted gold were continuously used in the early Han dynasty. It was since 118 BC that the WuZhu coin became the main currency of the Han dynasty (206 BC-220 AD). At the end of the Western Han dynasty, Wang Mang's coinage system reforms fell in failure, which caused the rise of the barter economy and the breaking-down of the coinage systems of the Eastern Han dynasty." The text is written in Chinese characters.