1. Ingredients: two steamed buns, one tablespoon of cooking oil, one tablespoon of salt, 10 grams of chili powder, and 10 grams of cumin powder.

2. First, cut the steamed buns into slices, not too thin, otherwise they will be very hard when copied. Next, coat one side with a little cooking oil. Sprinkle salt, chili and cumin powder evenly. Finally, place the coated bun slices in the oven. Bake over medium heat for about 5 minutes, take out and turn over, coat with oil, sprinkle with seasonings, and bake over medium heat for 5 minutes.