In a bowl, mix pork, shrimp (if using), soy sauce, sesame oil, ginger, garlic, and green onions until combined.
Place 1 tsp filling in the center of a wonton wrapper.
Dip your finger in water and moisten the edges.
Fold into a triangle, pressing to seal, then bring the two corners together and pinch to form a classic wonton shape. Repeat.
In a pot, simmer broth with ginger, garlic, soy sauce, and sesame oil for 10 minutes. Strain out solids.
Gently drop wontons into boiling broth (in batches if needed). Cook for 5-6 minutes until they float.
Add bok choy in the last 2 minutes.
Ladle broth and wontons into bowls. Garnish with green onions.