2. Slice pork belly with skin, wash and drain, put it in a bowl, add appropriate amount of salt, oyster sauce, cooking wine, ginger powder, cumin powder, soy sauce, Chili powder and Chili oil, mix well and marinate for about an hour.
3. Wash the onion, shred it and lay it flat on the baking net with tin foil.
4. Spread the marinated pork belly on the onion piece by piece, put it in the middle layer of the preheated oven, bake at 230 degrees for about 15 minutes, take it out while it is hot and sprinkle with a little chopped green onion.