You mean the little blue box of family education. From the birth of the child, I used the little blue box to do early education for the child. It's only been used for half a year now. If the baby is 3 months old, it can be used. We chose this wow box because it was so convenient to do early education at home. It was designed by Eaton Shan Yu, who specializes in Montessori early education, for families with babies aged 0-3 years. Belonging to Montessori passive toys. A small blue box contains 4-6 toys, picture books and parents' manuals every month, which is different from month to month and is provided according to the development needs of children in that month. What impressed me the most was that when the child was three months old, his eyes really sparkled when he looked at the black and white red visual card, warm color card, fitness rack, bell and hide-and-seek towel in the box. If you are interested, you can go to Wow Box Tmall's Wonder Garden flagship store to find out. I remember an experience costume. You can buy it for your child to try first, and then decide to start when it is suitable.