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Jyutping caa4 gong1
Pinyin chá gǎng

Definitions (CC-CEDICT)
  1. to check the guard posts
  2. (coll.) to check up on sb (spouse, employee etc)
Definitions (Wiktionary)
  1. verb, intransitive, verb-object
    to check that someone is on duty or doing the right things; to check up on someone (e.g. spouse, employee, etc.)
  2. verb, intransitive, verb-object
    to do the rounds of guard posts; to inspect the sentries
    (syn.) 查哨
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)
  1. 日常用語:臺
    查哨
  2. 日常用語:陸
    查崗