I'm simply pointing out a fact, which isn't my imagination, I've worked in Japanese high tech PCB plant in China and saw first hand what the reality is, according to the Chinese who went to the company's Japan operation to study, the Japanese made better products using older equipment.
Chinese bullet train technology was bascially bought from Germany and Japan, and I've read mutiple times that they know how to manufacture it by designs (still rely on those two for some key parts), but don't know how to improve it coz don't know why.
But the propaganda made it sound like China invented it, and it's so advanced.