This depends on your personal situation, because this thing is intangible, and its value will not be seen for a while, depending on your investment in children and whether you are interested in children. My child is very lazy. He bought a lot of learning tools and attended remedial classes, which were not ideal. He bought Si Xuetong at the school report, and after a few months, his English improved. The students he bought with him have made progress in other subjects, and some students who are worse than him have now surpassed him.