I come from Xi 'an. The making method of the eight-treasure rose mirror cake is easy to learn, and the tools used are simple and cheap. A tricycle and an eight-treasure rose mirror cake steamer are all available in places where tableware is sold. If you really want to do it, you should buy all the materials first and practice before doing it.
I'll give you a website with training on Xi 'an specialty snacks, which is useful for you.