打正旗號 [－－－号]

Jyutping daa2 zeng3 kei4 hou6
Pinyin dǎ zhèng qí hào

Definitions (粵典–words.hk)
  1. 副詞
    光明正大​咁​宣揚​自己​嘅​目​標
    overtly; unabashedly; literally: "under a (large) banner"