Make the filling

• Mix the chicken, shrimp, soy sauce, oyster sauce, rice wine and green onion in a bowl until well combined.

Wrap the wontons

• Place about a teaspoon of filling in the center of each wrapper.
• Moisten the edges with water and seal, folding into wontons.

Boil the wontons

• Cook the wontons in boiling water until they float and are cooked through.

Simmer the broth

• Bring the chicken bone broth to a simmer with the dark soy sauce, rice wine, water, chicken powder, salt, sugar and white pepper.
• Let the broth simmer so the flavors meld.

Assemble and serve

• Divide the wontons into bowls and pour the hot soup over them.
• Garnish with green onion and serve.