打麻雀运动

dǎ má què yùn dòngdamaqueyundong

1. the Great Sparrow Campaign or the Four Pests Campaign, one of the actions during the Great Leap Forward 大躍進|大跃进[Da4 yue4 jin4] aiming to eliminate four pests: rats, flies, mosquitoes, and sparrows

Study it in Yanamino