百家争鸣百家爭鳴

bǎi jiā zhēng míng

ㄅㄞˇ ㄐㄧㄚㄓㄥㄇㄧㄥˊ

Idiom

1a hundred schools of thought contend (idiom); refers to the classical philosophic schools of the Warring States period 475-221 BC