Commercial bribery refers to the behavior of relevant personnel who can affect market transactions, such as principals, employees, partners, agents and staff of relevant government departments, in order to strive for trading opportunities, especially to obtain market advantages over competitors, by secretly paying property or other rewards and other improper means.
Doctor Li buying foreign medical equipment at a high price and the manufacturer providing free accommodation for Li's daughter studying abroad for one year is a commercial bribery according to the above definition.