Dip 2 pieces of rice paper (or 3 if you want thicker noodles) in warm water then stack together aligned evenly. Place rice paper on cutting board and allow it to rehydrate. Once rehydrated and dry, brush the bottom and top sides of the stacked rice paper with some oil (to prevent from sticking later). Cut noodles into 1 inch thick noodles or your desired size. Transfer noodles to a bowl of cold water to keep it hydrated until sauce is ready. Repeat with remaining rice paper.
In a heatproof bowl, combine the green parts of the scallions, grated ginger, toasted sesame seeds, red chili flakes, and sugar.
Heat 3 tablespoons of avocado oil in a small pan over medium-high heat until shimmering (but not smoking). Carefully pour the hot oil over the ginger and scallions in the bowl. It should sizzle and release a beautiful aroma. Stir in the soy sauce, chicken broth or water, salt, and white pepper. Mix well.
Add the rice paper noodles to the bowl and toss thoroughly until the noodles are evenly coated with the ginger scallion oil mixture. Taste and adjust the seasoning if needed.
Plate the noodles and garnish with chili crisp or chopped cilantro.