Divide the cooked noodles in 4 bowls.
Heat the vegetable oil in a large skillet set over medium heat. Once the oil is glistening, add the pork, and cook, breaking it up with a wooden spoon, until almost cooked through, about 8 minutes.
Add the ginger and garlic and cook until fragrant, about 2 minutes.
Stir in the soy sauce, sherry, chicken stock, peanut butter, cinnamon, Sichuan peppercorns, sugar and chili paste. Bring to a boil over high heat before reducing heat to low.
Simmer, stirring occasionally, until the sauce begins to thicken, about 6-9 minutes.
Spoon equal amounts of pork and sauce over the cooked noodles. Garnish with green onions and peanuts.
