In view of this problem of parents, I put forward my views. First of all, let's talk about parents' subjective first impression of robots. Most parents think that robots must be humanoid. On TV and in shopping malls, humanoid robots can often be seen dancing and courting competitions. This kind of robot is full of high-tech sense, looks dazzling and has high technical difficulty. This is something older children must learn. Lego, on the other hand, is made up of some plug-ins, which are robots that can't dance and don't look like humans. It seems a little simple, suitable for children to learn. In fact, humanoid robots that can dance and other actions are commonly known as steering gear robots. They rely on the combined motion of the steering gear to realize the action of the robot. Each robot contains many steering gears. The robot can make corresponding actions by inputting ready-made instructions through the children's computer. The technical difficulty is actually very low, but it seems to have a strong sense of science and technology. Let's take a look at the Lego thinking storm again. The biggest feature of Lego is that all equipment is assembled from scattered parts, and all Lego parts are universal. All active Lego mindstorms will be applied to a large number of transmission structures, such as gear transmission, connecting rod transmission, pulley transmission, turbine transmission and so on. The more complicated the robot is, the more complicated its structure is, and it has a mechanical aesthetic feeling. The disadvantage of Lego is that the whole robot is assembled from scattered building blocks, so it is not as beautiful as the finished steering gear robot in stability and appearance, and it can't do the beautiful actions as the steering gear robot. But in terms of difficulty and complexity, it will not be simpler than the steering gear robot. Lego, known as the toy of the century, is a great toy to change human civilization. The crowd covers 3-70 years old, showing its charm. There are many professional Lego players all over the world now. Their slogan is: "Everything you can see can be copied with Lego".