功高蓋主 [－－盖－]

Jyutping gung1 gou1 koi3 zyu2
Pinyin gōng gāo gài zhǔ

Definitions (粵典–words.hk)
  1. 語句
    功勞​高到​蓋過​上司
    to achieve greater feats than one's boss, implying that the boss will likely be annoyed that one is taking away the limelight and glory from them

功高蓋主 [－－盖－]

Jyutping
Pinyin gōng gāo gài zhǔ

Definitions (CC-CEDICT)
  1. lit. one's accomplishments overshadow the authority of the sovereign (idiom)
  2. fig. to be so influential that one rivals one's leader