In a mixing bowl, combine the flour, water, and vegetable oil to form a dough.

Knead the dough for about 5 minutes until smooth.

Cover the dough with a damp cloth and let it rest for 20 minutes.

In a separate bowl, mix the ground pork, chopped shrimp, soy sauce, sesame oil, and green onions.

Roll out the dough and cut into circles.

Place a spoonful of filling in the center of each circle and fold to seal.

Place the dumplings in a steamer and steam for 15 minutes until cooked through.