大鳴大放

(idiom) to freely air one's views / to be heard far and wide / to attract a lot of attention

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

to cry (of birds, animals and insects) / to make a sound / to voice (one's gratitude, grievance etc)

to put / to place / to release / to free / to let go / to let out / to set off (fireworks)

see 百花運動|百花运动[Bai3 hua1 Yun4 dong4]