2. Unpack the oxtail, put it in a cold water pot, boil it with strong fire, and remove it and wash it for later use.
3. Cut the carrot into hob blocks or slices.
4. Put the washed oxtail into the soup pot, add star anise, Shaoxing wine and ginger, inject 1500ml water, simmer for 2.5h, and then add other ingredients.
5. Continue to simmer for about 2 hours. Add appropriate amount of salt according to personal taste before cooking.