百花齐放，百家争鸣

百花齊放，百家爭鳴
bǎihuāqífàng,bǎijiāzhēngmíng
a hundred flowers bloom, a hundred schools of thought contend (idiom); refers to the classical philosophic schools of the Warring States period 475-221 BC, but adopted for Mao's campaign of 1956

CEDICT

Entry Composition

1 百花齐放 bǎihuāqífàng a hundred flowers bloom (idiom); let the arts have free expression
2 百家争鸣 bǎijiāzhēngmíng a hundred schools of thought contend (idiom); refers to the classical philosophic schools of the Warring States period 475-221 BC