1. Cut pig's trotters into pieces, cook under cold water, add green onion and ginger cooking wine, blanch the froth and remove
2. Put the rock sugar and cold oil into the pot and fry on low heat. When the big bubble turns to small bubble, add the trotters and stir-fry evenly
3. Add ginger, garlic, dried chili, anise star, and a small piece of cinnamon, stir fry together
4. Add warm water, 2 tablespoons of light soy sauce, half a tablespoon of pepper, cover and simmer for 1 hour
5. Add 1 tablespoon of salt before serving, stir and fry evenly to get out of the pan
