A special part independently developed by XTdoll is installed at the thigh skeleton joint. This part is a pure industrial mechanical part that does not rely on electric drive and works entirely by its exquisite mechanical structure. When the thigh or foot is pushed, this force will be quickly transmitted to the special spring part, causing the thigh to start shaking. This shaking is not an irregular swing but a carefully designed feedback action that can simulate the real force response and bring a more realistic experience to users.
