The red, yellow and blue growth center has a parent-child exploration course, which is quite good. When the child was eight months old, I took him to study together. What I learned is the little explorer inside, which allows children to master various crawling abilities, establish the concept of object persistence, and perceive the causal relationship between things. By 13 months, I can continue to learn from the next little activist and master the ability of walking and sports, so that children can find it through independent exploration.