In a wok heat up oil and rock sugar until the sugar begins to disolve, then add garlic and shallots.
When the garlic and shallots begin to soften add in shitake mushrooms, Chinese 5 spice, pork belly, Shaoxing wine, light soy sauce, dark soy sauce, and water.
Stir and bring to a boil.
Using a cheese cloth, add star anise, Szechuan peppercorns, bay leaves, cloves, cinnamon stick, ginger, and orange then tie off the spice bag.
Add the spice bag and hard boiled eggs to the wok, then cover with a lid letting the mixture simmer for 1-2 hours. Make sure to skim off the excess fat.