Using stand mixer fitted with paddle, beat pork and lard, if using, on medium speed until well combined and mixture has lightened in color, about 2 minutes. Reduce speed to medium-low and add shrimp, 1 tablespoon soy sauce, 1 tablespoon sugar, oyster sauce, bouillon powder, sesame oil, Shaoxing wine, vinegar, salt, pepper, and five-spice powder. Mix until just combined, about 30 seconds. Cover bowl with plastic wrap and refrigerate for 30 minutes.
2. Heat empty 14-inch flat-bottomed wok over high heat until just beginning to smoke. Reduce heat to medium-high, drizzle vegetable oil around perimeter of wok, and heat until just smoking. Add cabbage, carrot, remaining 1 tablespoon soy sauce, and remaining 1 teaspoon sugar and cook, tossing slowly but constantly, until cabbage is just softened, about 2 minutes. Transfer vegetable mixture to large plate, spread into even layer, and refrigerate until cooled slightly, about 15 minutes.
3. Meanwhile, soak noodles in 4 cups hot water in bowl for 15 minutes. Drain noodles and rinse under cold running water until chilled. Drain noodles again, then transfer to cutting board and chop into rough 1-inch lengths. Return bowl with pork mixture to mixer fitted with paddle. Add vegetable mixture and noodles and mix on low speed until well combined, about 1 minute.
4. Fill small bowl with water. Working with 1 wrapper at a time, arrange on counter so 1 corner points toward edge of counter. Place rounded ¼ cup filling on lower half of wrapper and mold it with your fingers into neat 4-inch-long cylinder parallel to edge of counter. Dip your fingertip in water and moisten entire border of wrapper with thin film of water.
5. Fold bottom corner of wrapper over filling and press gently along length of filling to remove air pockets. Fold side corners over to enclose filling snugly; gently roll to form tight cylinder and press edges to seal. Transfer egg roll seam side down to parchment paper–lined plate and cover with damp paper towel while shaping remaining egg rolls. Stack egg rolls as needed, separating layers with additional parchment. (Egg rolls can be frozen until solid, then transferred to zipper-lock bag and stored in freezer for up to 1 month. Do not thaw before frying; increase frying time by 2 minutes.)
6. Set wire rack in rimmed baking sheet and line rack with triple layer of paper towels. Add peanut oil to clean, dry, 14-inch flat-bottomed wok or large Dutch oven until it measures about 1½ inches deep and heat over medium-high heat to 350 degrees. Using tongs, carefully add 6 egg rolls seam side down to hot oil and cook until deep golden brown, 4 to 8 minutes, flipping egg rolls halfway through frying. Adjust burner, if necessary, to maintain oil temperature around 350 degrees. Using tongs, transfer egg rolls to prepared rack and let drain. Return oil to 350 degrees and repeat with remaining 6 egg rolls; transfer to prepared rack and let drain. Serve.