1, onions, vegetables and peppers, eggplant fried beef is not mutually exclusive.
2, practice: beef diced, with salt, black pepper, sugar, cooking wine, soy sauce marinade at least half an hour. Onions, bell peppers diced, garlic, ginger shredded spare. Peppers and onions were sautéed in a pan, then add the beef, peppers, onions and ginger and garlic together in the pan, sautéed and then out of the pan.