放声大哭

放声大哭	fàng shēng dà kū	to sob loudly; to bawl
放	fàng	to put / to place / to release / to free / to let go / to let out / to set off (fireworks)
放声	fàng shēng	very loudly / at the top of one's voice
声	shēng	sound / voice / tone / noise / reputation / classifier for sounds
大	dà	big; large; great / older (than another person) / eldest (as in 大姐) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)
大	dài	see 大夫
大哭	dà kū	to cry loudly
哭	kū	to cry; to weep