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Digital assets and currencies

Understand assets, networks and trading mechanics with sources you can check.

Banking

Flying cash

Flying cash (Chinese: 飛錢), or Feiqian, was a type of paper negotiable instrument used during China's Tang dynasty invented by merchants but adopted by the state. Its name came from their ability to transfer cash across vast distances without physically transporting it. It is a precursor to true banknotes which appeared during the Song dynasty.

Trading basics

Piggy bank

A piggy bank (sometimes penny bank or money box) is a coin container normally used by children, featuring a slot at the top to insert coins or folded bank notes. The piggy bank is known to collectors as a "still bank" as opposed to the "mechanical banks" popular in the early 20th century. These items are also often used by companies for promotional purposes, and many financial service co