This looks like a real old secret.

However, beeswax is easy to be faked, and it is easy to turn beeswax into an old secret when baked with a fire, so I suggest you find an expert to get you started.

The so-called Shoushan stone below doesn't seem to conform to modern laws.

It looks more like hibiscus jelly in Shoushan.

This stone looks like a good stone. If it is really Shoushan Hibiscus Cake, it should not be carved so deeply, and it is usually finely carved, which not only saves materials, but also avoids excessive stone removal. Good hibiscus jelly is not cheap, but also priced by gram.

So this stone needs to be considered.