The four largest companies in a specific industry, most commonly referring to the Big Four accounting firms or major commercial banks

freedom; liberty; the right to act according to one's own will within the scope of the law

A political slogan from the People's Republic of China referring to speaking out freely, airing views fully, holding great debates, and writing big-character posters; refers to 大鸣大放 dà​míng​dà​fàng, 大辩论 dà​biàn​lùn, and 大字报 dà​zì​bào

freedom; liberty; the right to act according to one's own will within the scope of the law