1. After beef is sliced or shredded, add ginger, sugar, soy sauce, oil, corn flour and pepper, mix well and marinate. Slice the onion and put it in the pot.

2. Stir-fry the onion until it is transparent, and then take it out. Then clean the wok and fry the beef with oil. When the beef is basically discolored, pour in the fried onion and stir well. Add a spoonful of oyster sauce and a spoonful of soy sauce and stir well.