Chop pork and 75g shrimp into the mud. And add them in a large bowl, add ginger, green onion, salt, sugar, 1 tablespoon of cooking wine, fish sauce, starch, vegetable oil and oyster sauce. Mix them well. Add 75g shrimp with 1 tablespoon of cooking wine and 1 pinch of salt in another bowl. Marinate them for a while.