After we secured a constant tuning and once the bow was properly rosined, my wife started practicing.

They give you an additional set of strings, a multi-note pitch pipe for tuning purposes (which I prefer over electronic tuners anyway), rosin which seems to be just as good as the one I use for my viola, two bridges, two felt pads, a set of fine-tuners if you prefer to use those (as stated before, I personally do not since I like the tone better without it), and a Beijing-style bow (which is a lot easier to set up with the erhu than a Shanghai-style one).

After about two weeks, it is still holding up and stays in tune pretty well