四兩破千斤 [－两－－－]

Jyutping sei3 loeng5 po3 cin1 gan1
Pinyin sì liǎng pò qiān jīn

Definitions (Wiktionary)
  1. phrase, Hokkien, idiomatic
    a huge return for a very small investment; a big payoff for a small effort
    (syn.) 四兩撥千斤, 四两拨千斤