1. Put sliced pig fat in the pot, fry out the lard, remove the lard residue, and leave the oil in the pot
2. Pour in the onion slices and fry until the aroma is scented. The onion is zoomed. Strain the onion and leave the onion oil for later
3. Boil water in a pot, add noodles and cook, remove to cool, drain the water
4. Squeeze an appropriate amount of soy sauce, sauce, 1 tablespoon of boiled scallion oil into the bowl, pour an appropriate amount of boiling water, put the noodles in the soup, sprinkle with chopped green onions
