[---]

Jyutping zek3 sau2 ze1 tin1
Pinyin zhǐ shǒu zhē tiān

Definitions (粵典–words.hk)
  1. 動詞
    一個​人​獨攬​大權​,​控制​晒​,​有​貶​抑人​蠻橫​、​專​制​嘅​意味
    (derogatory) to possess great power alone; to be in control of something by oneself; literally: to cover the sky with a lone hand
    • 老闆出咗差,佢嘅助手就隻手遮天話晒事。
      老板出咗差,佢嘅助手就只手遮天话晒事。
      lou5 baan2 ceot1 zo2 caai1, keoi5 ge3 zo6 sau2 zau6 zek3 sau2 ze1 tin1 waa6 saai3 si6.
      When the boss was on a business trip, his assistant was in control of everything alone and made all the decisions.

[---]

Jyutping zek3 sau2 ze1 tin1
Pinyin zhī shǒu zhē tiān

Definitions (CC-CANTO)
  1. the act of deceiving people in broad daylight (spoken)
Definitions (Wiktionary)
  1. phrase, idiomatic
    to hide the truth (from the public or masses)
    (syn.) 一手遮天
Examples (粵典–words.hk)
  1. Cantonese
    只手遮天
    隻手遮天
    • to alone possess great power
  2. Cantonese
    老板出咗差,佢嘅助手就只手遮天话晒事。
    老闆出咗差,佢嘅助手就隻手遮天話晒事。
    lou5 baan2 ceot1 zo2 caai1, keoi5 ge3 zo6 sau2 zau6 zek3 sau2 ze1 tin1 waa6 saai3 si6.
    • When the boss was on a business trip, his assistant was in control of everything alone and made all the decisions.