挑大樑 [－－梁]

Jyutping tiu1 daai6 loeng4
Pinyin tiǎo dà liáng

Definitions (粵典–words.hk)
  1. 動詞
    即​係​擔​大旗​；​喺​活​動​或者​組織​入面​擔任​最​重要​嘅​角色
    to take up the most important role in an event or an organisation