Mix the flour with warm water to form a slightly soft dough, cover with plastic wrap and let rise for 15 minutes, the dough should be slightly soft. Stir in minced ginger, yellow wine, soy sauce, sugar, salt, white pepper, monosodium glutamate (MSG) and chicken broth. Add water to the pork mixture and beat the mixture vigorously. Finely chop the green onion and add to the pork mixture, stirring well. Roll out the dough into a large circle and cut a slit from the center to the edge of the circle. Spread the pork filling evenly over 3/4 of the sheet. Cover the ? of the dough sheet without the meat filling. Fold again.