It is suitable for 4-year-old babies to learn to read first, because their language ability and cognitive ability have not reached the level of fully understanding pinyin. Literacy refers to learning to recognize Chinese characters, which is the basis of Chinese learning. By recognizing Chinese characters, the baby can gradually understand the basic elements of Chinese characters, such as structure, font, strokes, etc., which is helpful for learning pinyin in the future. At the same time, literacy can also stimulate the baby's interest in Chinese characters and characters, and lay a good foundation for future study.

When children are interested in some simple Chinese characters, parents can help them learn some simple Chinese characters, such as body parts and names of family members. These are all Chinese characters that children often come into contact with in their lives. When children have a certain literacy foundation, then gradually guide them to learn pinyin and learn Chinese spelling, which can improve their reading and writing ability.