I don't know what ceramic rice cookers and waterproof ceramic rice cookers specifically mean. Generally speaking, the only difference between the two is the heating mode. One is direct heating, the other is indirect heating. Like stew, stew is better. The key to the deterioration of meat quality and the improvement of taste is the temperature control of the stew pot and the length of stew time. Under the same power, the direct heating mode is more energy-saving.