Rub beef with salt repeatedly, marinate it in a jar 1 to 2 days, soak it in a boiling water pot for 5-6 minutes, and take it out after cleaning blood stains. Cut into large pieces, put them in a cold water pot, and add soy sauce, sugar, onion, ginger, celery and cloth-wrapped seasoning package (including anise, cinnamon, star anise, pepper, clove, etc.). ); Bring to a boil, skim off the foam, and the soup will turn into sauce red. Turn down the heat and keep the temperature of the soup at 95? C or so, slowly cook for about 30 minutes; Take out celery and cook for 2 hours. When the beef is crisp and rotten, collect thick soup, spread foam on the surface of the beef, air-cool, slice and plate.