Because Watermelon Maker founded online children's programming to let children explore the vast unknown world through programming language, Watermelon Maker pioneered the AI double-teacher classroom in children's programming industry, created a four-step closed loop of "learning, practicing, testing and competing", set up an activity center, and cooperated with British institutions such as China National Youth Palace Association, China Institute of Electronics, BBC micro:bit Foundation, etc., and became the official partner of several national and international major events, with excellent event instructors leading Watermelon Maker students to CPA programming level.