xīn
heart
Pictograph of a human's heart.
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Mid Western Zhou (~900 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernComponent uses
Sources
季旭昇《說文新證》p.787
