自立門戶 [－－门户]

Jyutping zi6 laap6 mun4 wu6
Pinyin zì lì mén hù

Definitions (CC-CEDICT)
  1. to form one's own group or school of thought
  2. to set up one's own business
  3. to establish oneself
Definitions (Wiktionary)
  1. phrase, idiomatic
    to establish one's own group, school of thought, business, etc.; to strike out on one's own