Cut the beef into 200g pieces, put it on the basin (there is blood in it after washing several times), if it is clear soup, put water in the pot (the water can be more than 3 times that of beef), and then put the beef after boiling. After the beef is boiled, take a frying spoon to beat out the floating foam on it, cover it, put it on a small fire, insert the beef with chopsticks after 40 minutes, if not, cook it for another hour.