1. Chop beef, add a little cooking wine, starch and cooking oil, and marinate for five minutes.
2. Cut the tofu into small pieces.
3. Put the oil in the pot and heat it to 40% heat, add the beef and stir fry to change the color.
4. Put a bowl of water to boil, add tofu and salt.
5. Turn off the heat after tightening the soup.
6. Served and sprinkled with chopped green onions
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