2. Practice: Slice pork belly, add salt, cooking wine, soy sauce, spiced powder, pepper powder, Chili powder, oyster sauce and sugar, stir well and marinate 1 hour; Preheat the oven in advance for 10 minute, spread tin foil on the baking tray, spread meat slices on the baking tray, and bake in the oven for 20 minutes; Turn the meat over after roasting, roast it for 15 minutes, and take it out.