Hong En's ability to read and write depends on his personal purchasing needs.

From the outline, the division of literacy in Hong En is relatively clear, which is in line with the cognitive level of children aged 3-8. In addition, Mr. Yu also compared the learning content of literacy with the knowledge of grade one schools, and found that the content of literacy covered the needs of grade one textbooks. When parents are studying for their children, they can stipulate the amount of literacy that children learn every day according to their basic level.