The function of eggshell seem to only use in casing,when life incubated,it will lost his function. when Christianism introduce into Europe,someone start to use eggshell for coloured drawing and accessorize,named"rebirth", "renascence",and as costful gift to their friends.
in China ,eggshell craftwork,also develop in profound culture atmosphere.in chinese myth story,God also gestated in huge egg.said:carve the egg then draw on it
which show:before BC2000,We have habitude coloured and drawing on eggs,and cook to eat. the eggshell is very thin and friability.but we can carve,draw,paint on eggshell through our special technics and creative labour,make it costful gift and craftwork.
just take those egg caring gifts as largess to your best friends and girl friends,show your love;to schoolfellow,show your friendship,to the elderly,show  your solicitude and respect;to bub and sister,show your thrive;to business friends,hope your work smooth.