What Is Paper Trading?

Bill transaction refers to the holder's method within a certain period of time based on the settlement of written debts with a certain format. Generally, a certain amount should be stated on such debt notes, and the money can be withdrawn from the invoicer or designated payer. In the modern economy, commodity transactions are mostly based on bills. The superficial reason is that it is convenient to carry and settle, which can save transaction costs. The deeper reason is that bills have their unique functions. ^[1]