Put onion, garlic, white sesame seeds and Chili powder into a bowl, pour hot oil, add two tablespoons of soy sauce, one tablespoon of balsamic vinegar, one tablespoon of oyster sauce, two tablespoons of sesame sauce, half a spoonful of sugar and salt, open the noodles with water, cook them in cold water, put them into a bowl, add cucumber, coriander and cooked peanuts, pour the prepared sesame sauce, and mix well.