Considering how dominant anime has become when it comes to 2D animation and also its popularity in China for the past few decades, I suspect that for the most part there will always be a lot of similarities. That being said, I think a number of existing donghua do have distinct Chinese visual elements to them. The most notable examples I can think of would be Fog Hill of Five Elements or this recent short film from Wolfsmoke (studio that did the batman of shanghai animations): https://youtu.be/IS_IFUTZUe4.