In order to better understand this aspect of Maoism, let's discuss the role of money in both a domestic context and in foreign exchange. The urban Chinese economy has been a highly monetized economy for a long time. The use of money to facilitate trade has a more recent vintage in rural China, where barter exchange is not uncommon today.
Money makes commercial transactions easier.
Thus, the expanded use of money makes possible an expansion in commercial transactions. The power of money to act as medium of exchange and unit of account is intricately linked to the power of money to act as intertemporal store of wealth. In addition to facilitating trade, money can facilitate the reproduction of pre-existing social relationships by allowing the command over marketable properties to be stored for future use, even passed on to future generations. In some cases, this marketable property can include human labor. The legacy of exploitation is passed on to future generations in the form of differential access to money.