Prepare some leg press, wash it with clear water, steam it, and put some holes in the duck meat, which will be more delicious. Prepare one onion, one ginger and one garlic, slice them, put some water into several pots, such as star anise pepper, and pour some seasonings such as soy sauce and seasoning. Then put the prepared onion, ginger and garlic leaves into the pot, and put leg press into the pot or boil over high fire for half an hour. When the water content in the pot decreases, the duck with large calcium solution will be taken out of leg press.