Heat 1 tbsp of cooking oil in a large pot or wok over medium-high heat. Arrange pork belly pieces in a single layer and sear until lightly browned on all sides. Remove and set aside.
In the same pan, add 2 tbsp of neutral oil and rock sugar. Cook until melted and bubbling. Let it caramelize into a deep amber color — this builds the signature glossy finish.
Return pork to the pan and stir to coat in caramel.
Add garlic, ginger, scallion, star anise, cinnamon stick, and dried chilies. Stir fry for 30 seconds until fragrant.
Add cooking wine to deglaze the pan. Then pour in light soy sauce, dark soy sauce, and water. Bring to a boil, then reduce to a gentle simmer.
Cover with a lid and cook for 1.5–2 hours, or until the pork is fork-tender.
Remove the lid. Increase heat to medium-high and reduce the sauce for a few minutes until thick and glossy. *Depending on the amount of your meat and liquid, it might take more time to reduce the sauce.
Garnish with chopped scallions and serve with hot rice. Pour the sauce on top of the rice if desire, and enjoy!