Examples
tā他wèi为zì jǐ自己de的lì yì利益háng行shì事。
他为自己的利益行事。
He is acting on his own behalf.
国家之间没有朋友，只有利益。
Countries don't have friends, they have interests.
为了长期利益，我们决定把开发部门卖掉。
For the sake of long-term interests, we have decided to sell the development department.