The physical and mental development of children is always the focus of our attention, but there are many small details in children's growth that have been overlooked by us. 'Hi,Baby' started from an interesting behavior of kids which is they often drilling or crawling under the table. What's behind this behavior? 'Hi,Baby' intends to make full use of the growth characteristics of children from crawling to other behaviors in different periods in order to explore the different needs during children's mental and physical development.