扒高踩低 [－－－－]

Jyutping paa4 gou1 caai2 dai1
Pinyin pá gāo cǎi dī

Definitions (CC-CEDICT)
  1. crawl high, step low (idiom); unprincipled crawling, flattering one's superiors and trampling on one's juniors
  2. toadying and bullying