Toothpick beef practice, a trick. Slice beef, add sugar, salt, soy sauce, cooking wine, starch, oyster sauce and ginger, marinate for 10 minute, and soak toothpicks in hot water for 10 minute. Add the sauce beef, fry it in a pot with 50% fire until golden brown, and take it out. Leave the bottom oil in the pot, add garlic and saute until fragrant, and add a spoonful of Chili powder. Stir-fry the toothpick and beef.