Prepare dipping sauce: Combine soy sauce, rice vinegar, chives, sesame seeds, and chile sauce in a small bowl. Set aside.
Prepare dumplings: Mix pork, garlic, egg, chives, soy sauce, sesame oil, and ginger in a large bowl until thoroughly combined.
Place a dumpling wrapper on a lightly floured work surface and spoon about 1 tablespoon of the filling in the middle.
Wet the edge with a little water and crimp together forming small pleats to seal the dumpling. Repeat to form remaining dumplings.
Heat 1 to 2 tablespoons vegetable oil in a large skillet over medium-high heat. Place 8 to 10 dumplings in the pan and cook until browned, about 2 minutes per side.
Pour in 1 cup of water; cover and cook until the dumplings are tender and pork is cooked through, about 5 minutes.
Repeat to cook remaining dumplings, adding more oil and water for each batch.
Serve dumplings with dipping sauce.
