Steps
1. Heat the vegetable oil in a pot over medium heat.
2. Add the sliced red onion and sauté until crispy and golden brown. Remove and set aside.
3. In the same pot, add the pork belly and sear until browned on all sides.
4. Pour in the rice wine and let it simmer for a minute.
5. Add soy sauce, brown sugar, star anise, cinnamon stick, five-spice powder, and salt.
6. Pour in the water and bring to a boil.
7. Lower the heat, cover, and let it braise for 2 hours, stirring occasionally.
8. Serve the braised pork belly hot, topped with the crispy red onions.