Soak the woonsen noodles in warm water for ~10 minutes while you prepare the other ingredients.
Make your spice paste by pounding the garlic, ginger, black peppercorns, and cilantro roots together in a mortar and pestle. Add the peppercorns last so that they are coarsely broken.
Make your soy sauce mixture by combining the oyster sauce, soy sauces, sesame oil, and water.
Assemble your clay pot as shown above (from bottom to top: bacon pieces, a few thin slices of ginger, the spice paste, soaked woonsen noodles, shrimp, soy sauce mixture, and Chinese celery).
Place on stove top with a heat diffuser and cook over medium-high heat for 20 minutes. Note: If you prefer the vegetables to still be a little crisp (like I do), add them in with 5 minutes left to cook.
Once the clay pot is done, mix all ingredients together and enjoy!