賣兒鬻女 (maai6 ji4 juk6 neoi5) — sell one's children (i.e., people have nothing to live on were forced to sell their sons and daughters) in Cantonese

spare no effort; exert to the utmost

final particle / suffix, placed after many commonly used nouns to avoid employing one-syllable terms in speech (very common in the Beijing dialect 北京話, see: 兒化, 兒化韻)

sell; vend

daughter; girl