1. Fat and thin pork hind legs are chopped into stuffing with a knife 2/ 172. Prepare a piece of tofu 3/ 173. Wash onion, ginger and carrot 4/ 174. Slice onion, ginger and carrot 5/ 175. Grab tofu and chop meat. 177. Put thirteen spices, pepper 8/ 178, a little salt, monosodium glutamate 9/ 179. One-way mixing with chopsticks101710. Drop a few drops of sesame oil165438/866, and then add a proper amount of cornflour 12/ 17 12. Fully stir131713. Add vegetable oil to the pot. After the oil is heated in medium heat, fry the pressed balls one by one in the oil. 14/ 17 14. Take out the meatball skin after solidification. 15/ 17 15. Then squeeze other fillings into the meatballs and fry them all in the pan. 16.