Season the pork filling: in a bowl, combine 300g minced pork, 1 tsp salt, 1 tsp white pepper, 1 tsp ginger powder, 1/2 tsp five-spice powder, 1 tbsp light soy sauce, 1/2 tsp dark soy sauce, 1 tsp oyster sauce, 1 egg, and chopped spring onions. Stir in one direction for 3–5 minutes until sticky. Rest in the fridge for 10 minutes.
Prepare the prawns: peel and devein raw prawns. Pat dry. If large, cut them in half lengthwise to fit the wrapper.
Assemble the dumplings: place 1 tbsp pork filling on a wrapper, press 1 prawn on top, dampen edges with water, and seal tightly. Place on a floured plate.
Pan-fry the dumplings: heat 1 tbsp oil in a non-stick pan over medium-high. Add dumplings flat-side down. Pour in water to cover the bottom of the dumplings. Cover with a lid and cook until water evaporates. Remove lid and fry until golden.
Serve and enjoy: transfer to a plate. Garnish with spring onions and sesame seeds. Serve with dipping sauce.