xml of other kind of hands

[bb0928]

Hi, I am now trying to reproduce your project to adapt to other kinds of hands, but i founded that if i simply transform urdf file to mojoco xml by using official method of mujoco, there doesn't have any "site" in the xml at all, making it impossible to start the simulator.
I am wondering if i need to add those sites manually or where can i download those xml for specific tasks? I am now using shadow. Thanks