The type of material, size and shape of your Gaohu bridge has a great impact on the tone of your instrument.
It can make the tone of your Gaohu brighter, more mellow, more resonance, more nasal, louder etc.
On top of that, the correct bridge will make the high notes sound clearer.
Finding that elusive bridge that suits your Gaohu as well as your ears will a lot of trial and error, especially no one Gaohu is alike another hence there is no one type of bridge that suits a particular Gaohu.
Here we have a little collection of Gaohu bridges for you to experiment with.