百花运动 (百花運動) bǎi huā yùndòng

bǎi huā yùndòng proper noun Hundred Flowers Campaign
Domain: History 历史 , Subdomain: China
Notes: PRC, 1956-57; In which Mao called for the taboo on discussing mistakes of the CCP to be lifted (CC-CEDICT '百花運動')