01 - Whisk together light soy sauce, dark soy sauce, vegan oyster sauce, sugar, rice vinegar, and water in a small bowl until well combined. Set aside for later use.
02 - Prepare rice noodles according to package instructions. If using dried noodles, soak or boil until tender but still chewy. Drain thoroughly and toss lightly with oil to prevent sticking.
03 - Heat vegetable oil in a large wok or skillet over medium-high heat. Add minced garlic and sauté for 20 seconds until fragrant, being careful not to burn.
04 - Add tofu strips to the wok and cook for 2-3 minutes until lightly golden on all sides. Remove from heat and set aside if needed, or push to the side.
05 - Add Chinese broccoli stems, carrots, and bell pepper to the wok. Stir-fry for 2-3 minutes until vegetables are just tender-crisp.
06 - Add the cooked noodles and prepared sauce mixture to the wok. Gently toss everything together using cooking motions, ensuring noodles are evenly coated with the sauce.
07 - Add Chinese broccoli leaves and continue stir-frying for 1-2 minutes until leaves are wilted and everything is heated through. For extra smokiness, allow noodles to slightly char against the hot pan before tossing.
08 - Transfer to serving plates immediately. Garnish with sliced green onions, lime wedges, and fresh chili slices if desired. Serve hot while maintaining texture.