According to the developmental characteristics of children at different ages (fetus, newborn, 0- 1 year, 1-2 years, 2-3 years, 3-4 years, 4-6 years and above), eight sets of high-definition pinyin textbooks are carefully configured by authoritative experts, so that Zhi Duoxiong can continuously upgrade the content with the growth of children. Foolish operation allows parents to easily do prenatal education as long as they turn on the switch, and the compact figure allows pregnant women and babies to carry it with them. Because of its good educational effect, it has passed the authoritative appraisal of the National Academy of Educational Sciences.