guǎn
a key
Phonosemantic compound. ⺮ represents the meaning and 完 represents the sound.
Evolution

Seal script
Chu (Warring States: 475-221 BC)
Seal script
Shuowen (~100 AD)
Seal script
Western Han dynasty (202 BC-9 AD)
Seal script
Western Han dynasty (202 BC-9 AD)Regular script
ModernSources