Originally this component was a pictograph of grass, similar to 艸, but later was reanalyzed as the visually similar 告.
Character Evolution
BronzeLate Western Zhou~800 BCBronzeLate Western Zhou~800 BCBronzeLate Western Zhou~800 BCBronzeLate Western Zhou~800 BCBronzeSpring and Autumn771-476 BCBronzeEarly Spring and Autumn~700 BCBronzeEarly Spring and Autumn~700 BCBronzeLate Spring and Autumn~500 BCBronzeLate Spring and Autumn~500 BCBronzeLate Spring and Autumn~500 BCBronzeWarring States475-221 BCBronzeWarring States475-221 BCBronzeWarring States475-221 BCBronzeLate Warring States~250 BCBronzeLate Warring States~250 BCSealWarring States (Chu)475-221 BCSealWarring States (Chu)475-221 BCSealShuowen~100 ADSealShuowen~100 ADClericalQin221-206 BCClericalWestern Han202 BC-9 ADClericalWestern Han202 BC-9 ADClericalWestern Han202 BC-9 ADClericalEastern Han25-220 ADClericalEastern Han25-220 ADClericalJin266-420 ADRegularModern