Similarities:
both FL are lost by their mother
mother adopts another child but everyone thinks they are related by blood
FL is being taken care by a happy,warm but not so wealthy family
antagonistic sister will do anything to prevent real mother meeting daughter
sister tries to steal everything that will make FL happy
Differences:
A tale of two sisters focuses more on the family problems than romance
production not that great, but story makes up for it
there is no heir involved. Instead of embroidery it shows announcers
both FL are lost by their mother
mother adopts another child but everyone thinks they are related by blood
FL is being taken care by a happy,warm but not so wealthy family
antagonistic sister will do anything to prevent real mother meeting daughter
sister tries to steal everything that will make FL happy
Differences:
A tale of two sisters focuses more on the family problems than romance
production not that great, but story makes up for it
there is no heir involved. Instead of embroidery it shows announcers