To many people, creating a model might seem much easier than building a complete object.
After all, a model is just a tiny piece, requiring neither much material nor much time.
However, those who have truly made models, especially 1:1 fully realistic ones, will tell you that making a model can sometimes be more difficult than making the real thing.
Because it's easy to make something small large, but making something large small is very difficult.
What Chen Xin wants to make is a scaled-down nuclear fusion reactor, but the technical requirements are no less demanding than building a full-size reactor, perhaps even requiring higher precision in parts processing than a large reactor.
Although large nuclear fusion reactors have strict requirements, there is a certain tolerance allowed for large equipment. But when you scale down the equipment proportionally, the original tolerance also becomes smaller.
