Step 1: Spread the dumpling skin in your hand and put in the stuffing, as shown in the following figure:
Step 2: Fold the dumpling skin in the middle and knead it from the left, as shown in the following figure:
Step 3: Pinch one side before pinching the dumpling skin on the other side, as shown in the following figure:
Step 4: The finally pinched jiaozi can be put away, as shown in the following figure: