In fact, to put it bluntly, enterprises can exchange money to buy what they need if they have money, and rely on bank loans if they have no money or little money. If so, only large state-owned enterprises and fairly good private enterprises are eligible for bank loans, which is very difficult for ordinary enterprises.
For example, Chinalco recently invested in Rio Tinto, acquired equity and some mining rights, a large part of which was bank loans, and then converted into dollars to do this.