Simplified form of 剛. Phonosemantic compound. 刂 represents the meaning and 岡 represents the sound.

Evolution

Oracle script

(~1250-1000 BC)

Bronze script

Early Western Zhou (~1000 BC)

Seal script

Shuowen (~100 AD)

Clerical script

Qin dynasty (221-206 BC)

Traditional script

Modern

Simplified script

Modern

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