After soaking the Shitake mushrooms, cut off the mushroom pedicles;
Soak the sea cucumbers in water with ginger and scallion until they are soft. After soaking, clean the intestines;
Heat the clay pot, add oil and stir fry the mushrooms, then add 4 bowls of water and the chicken powder and rock sugar. Turn to `medium heat and stew for an hour, then add the sea cucumber, and cook until it becomes tender.
Add oyster sauce. Boil for a little while, and turn off the heat;
Blanch the baby pak choy with hot water, drain it, and place it on a plate. Top with mushroom and sea cucumber for serving.