When talking to your son about his adopted sister, you should consider his age and developmental level.
For younger children, it may be helpful to use simple, age-appropriate language to explain the concept of adoption.
You might say something like, "Your sister is special because she has two families who love her.
She was born into one family, but she came to live with us because we wanted to be her family too. She is just as much a part of our family as you are."
For older children, you can provide more detailed information about the adoption process and the reasons why your family chose to adopt.
It's important to listen to your son's questions and concerns and to reassure him that he is a valued and loved member of the family.
Overall, the key is to approach the topic with sensitivity and to be honest and open with your son.
It's also important to let him know that it's okay to have questions or feelings about his adopted sister and to encourage him to talk to you or another trusted adult if he has any concerns.