The term 'Bygone Chinese Money' refers to the currency used in China before the introduction of the yuan. The most common form of bygone Chinese money was the TAEL, which was a unit of measurement for silver and gold. It was also used as a form of currency, with one TAEL being equal to 10 mace or 100 candareens. The TAEL was widely used in China until the early 20th century when it was replaced by the yuan.