Book Set:There are four books Sentence:Learn the whole sentence with words, not limited to vocabulary, and expand more knowledge Point Expansion:Extend more knowledge outside of books, all related to the actual events in life, including life tips and safety tips The story of a word:Explain in detail the interpretation of the vocabulary, and help children to remember the vocabulary Exit key:lick on other function keys, remember to press exit as if you have finished playing a game console Test of Eyesight:Give instructions to let children read books according to the problem points, deepen their knowledge points, and train the babies to focus more Similar Word:Compare the similar words to find the difference and solve the confusion of children. Pinyin is also added to make it easier to learn. Game Mode:Add interactive mode to make the learning process more lively and interesting, while training children to concentrate Questions:Combining the real objects that appear in the book story to asking question