好馬不吃回頭草 (hou2 maa5 bat1 hek3 wui4 tau4 cou2) — to never go back (relationship, jobs etc.) in Cantonese
houˊ²好maaˏ₅馬batˉ¹不hek˗₃吃wuiˎ₄回tauˎ₄頭couˊ²草简 好马不吃回头草
Mandarin Pinyin: hao3 ma3 bu4 chi1 hui2 tou2 cao3
Meaning of 好馬不吃回頭草
nounto never go back (relationship, jobs etc.)