First of all, parents can try to avoid comparing two children, and don't measure one child's performance by another. Secondly, parents can encourage and support two children to pursue different hobbies and provide them with equal opportunities and resources. In addition, parents should also ensure that their two children can enjoy the same rights and freedoms in their daily lives, and respond to their needs and problems in time.
Although it may be difficult to achieve complete "fairness" in a family with two children, parents can pay attention to and understand the needs of the two children and take appropriate measures to deal with any unfair situation, so that the children can feel love and respect, thus cultivating their self-esteem and sense of family responsibility.