The bottom component of this character was originally 火. Later it was changed to 炎.
Change in form
Due to historical stylistic changes, this component is less similar to 炎 than it was in ancient scripts.
Character Evolution
BronzeLate Western Zhou~800 BCBronzeLate Western Zhou~800 BCBronzeLate Western Zhou~800 BCSealMid Western Zhou~900 BCSealShuowen~100 ADClericalQin221-206 BCClericalWestern Han202 BC-9 ADRegularModern