2. Seasoning: two star anises, six dried peppers, a little onion, a teaspoon of soy sauce, half a teaspoon of sugar and half a teaspoon of salt.

3. Peel the yam and cut it into hob pieces, cut the chicken legs into pieces, and wash and drain them all.

4. Heat oil in the pot, fry the yam until the surface is slightly yellow, and take it out.

5. Heat the remaining oil in the pot and pour in the chicken legs and stir fry until the surface is slightly yellow.

6. Pour in yam, soy sauce and stir fry with sugar.

7. Heat the water without ingredients and add star anise, pepper, salt and onion.

8. Bring the fire to a boil, simmer until the soup is thick and sprinkle with chopped green onion.