1. Boil the beef under cold water to remove the blood; prepare an anise bag, star anise, cinnamon, and anise
2. Add the bloody beef to the green onion, ginger, and aniseed buns, and start to simmer until the sirloin is rotten, about 4 hours (if you have a pressure cooker, press for 15 minutes)
3. Stir-fry the tomatoes (before blanching the tomatoes with hot water, the skin will be removed quickly); put the stewed sirloin in the pot of the tomatoes, then add some stewed sirloin soup, add a little sugar to taste, and simmer on low heat Half an hour until the tomatoes are juiced, and finally add salt to taste
