Step 1

In a heavy skillet over medium-high heat, heat the oil. Add the ground pork and cook, breaking up the meat with a spatula, until the meat is well browned. Add the hoisin sauce, wine, soy sauce, five-spice powder, and salt. Stir to mix well and then remove from the heat.

Step 2

Meanwhile, bring a pot of water to a boil and cook the noodles according to the package directions. In the last minute of cooking, add the bok choy. When the cooking is complete, remove the bok choy. Save 1 cup of the cooking water. Drain the noodles and rinse under warm water.

Step 3

In a small bowl, make the sauce. Mix together the chili oil, sesame paste, soy sauce, sugar, garlic, ginger, five-spice powder, ground Szechuan peppercorns, black pepper, and ground coriander. If the sauce is too thick, add a bit of the reserved noodle cooking water.

Step 4

Divide the noodles among 4 bowls. Add one piece of bok choy to each bowl. Spoon the sauce over the noodles and top with the pork. Garnish with the green onions and serve.