I almost didn’t see this because it wasn’t in the bulldozer section. The moderator would have moved your post, but he is mostly non-existent.
So your dozer is actually a Guilin that was rebranded as a Rhino, and Guilin was purchased by Yuchai sometime around 2002. Not many changes overall. A little more info on your machine would be extremely helpful.
Does it have the six-way blade? What was the function of the broken hydraulic hoses? I assume they have the ORFS fittings?
There are quite a few hydraulic hoses listed here, but there are also adapter fittings to convert to JIC fittings so you can make your own hoses.
https://www.circlegtractorparts.com/yuchai-bulldozer-parts