No additives are added in the process of making Bazhen cake, so there may be some cracks on the surface of the finished product, which is normal and does not affect eating. It is suggested that Bazhen cake should be kept in a sealed container and kept in a cool and dry place. It can also be stored in the refrigerator, but it should avoid humidity and odor.

The above suggestions are for reference only. If you need more specific preservation methods, you can consult a professional food preserver.