First of all, let's compare these three products. The children's tablet of Little Genius is the children's tablet of Reading Lang, which is used for children aged 2- 12 (that is, before graduating from primary school), and the tutor is used for primary school to high school, which is selected according to the children's situation. In 20 12, Reading Lang produced children's tablet q 1, in 20 13, and in 20 14, Little Genius began to make children's tablet k 1 in 20 14, which was suspected of imitating Reading Lang. Both brands are good, depending on personal hobbies, there are many advertisements for little geniuses, and the brands are louder.