獨霸一方 [独－－－]

Jyutping duk6 baa3 jat1 fong1
Pinyin dú bà yī fāng

Definitions (CC-CEDICT)

to exercise sole hegemony (idiom); to dominate a whole area (market, resources etc)
to hold as one's personal fiefdom

Definitions (Kaifangcidian)