If parents oppose marriage with the same surname, it can be scientifically proven to parents that marriage with the same surname is possible and will not have any adverse effects. If it belongs to a close relationship within three generations, it cannot become a marital relationship. If it exceeds three generations, it is also not related and will not affect the next generation.
Parents who oppose marriage with the same surname are mostly afraid that both parties belong to the same clan, which may affect the health of their offspring. However, having the same surname does not necessarily mean that it constitutes a familial relationship that cannot be married. There is no need to rush when encountering such a problem. You need to explain and communicate with your parents to ensure that you have no blood relationship with them and that marriage will not have any impact on your children. I believe that your parents will agree after understanding that there are no worries.