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Jyutping jim4 hung3
Pinyin yán kòng

Definitions (Wiktionary)
  1. verb, transitive
    to strictly control; to bring under strict control

嚴控 [严-]

Jyutping
Pinyin yán kòng

Definitions (CC-CEDICT)
  1. to strictly control (abbr. for 嚴格控制|严格控制[yan2 ge2 kong4 zhi4])