Prep:

1. Prepare the fresh ingredients: Prepare the yellow onion, garlic, ginger, red chilies, spring onion, and yellow Chinese chives as indicated in the ‘Ingredients’ section. Place the mung bean sprouts in a bowl of water and place in the fridge for 15 minutes to revive them. Then drain into a fine mesh strainer and rinse.
2. Marinate the chicken: Clean and pat-dry the chicken breasts, then slice as thinly as possible into bite-sized pieces. Add the chicken to a medium-sized bowl, followed by the corn starch, Shao Xing rice wine, low sodium light soy sauce, sesame oil, ground white pepper, and kosher salt. Mix with a spoon until combined well, then set aside.
3. Make the sauce: Whisk together the low sodium light soy sauce, dark soy sauce, white sugar, and oyster sauce in a measuring cup or small bowl.
4. Prepare the rice noodles: Combine the fresh rice noodles, sweet dark soy sauce, dark soy sauce, and white sugar in a medium-sized bowl. Use your fingers (or tongs) to gently toss until the noodles are evenly coated in the sauce mixture.

For the Chicken Chow Fun:

1. Stir-fry the onion, spring onion, and Chinese chives: Heat 2 teaspoons of canola oil in a large wok over high heat. Once hot, add the yellow onion and stir-fry for 30 seconds. Add the spring onion and Chinese chives and stir-fry for another 15 seconds until slightly wilted. Transfer to a clean bowl and set aside.
2. Cook the chicken: Heat 1 tablespoon of canola oil in the wok over high heat. Once hot, add the marinated chicken and spread the pieces out in the wok. Stir-fry for a minute, until 80% cooked and no longer pink. Transfer to a clean bowl and set aside. Wipe out the wok with paper towels and set it back on the stovetop.
3. Char the rice noodles: Heat 1 tablespoon of canola oil in the wok over high heat. Once hot, add the rice noodles and cook for 15-20 seconds. Then toss and allow to cook for another 15-20 seconds. Repeat once more if needed, until the noodles are slightly charred. Transfer to a clean bowl and set aside.
4. Stir-fry the aromatics: Heat the remaining tablespoon of canola oil in the wok over medium-high heat. Once hot, add the garlic, ginger, and red chilies. Stir-fry for 30-40 seconds until fragrant.
5. Add the rice noodles: Add the charred rice noodles, ground white pepper, and kosher salt. Stir-fry briefly to combine.
6. Add the veggies, chicken, and sauce: Add the yellow onion, spring onion, Chinese chives, the chicken and the resting juices in the bowl. Stir-fry for 20 seconds to combine. Then pour in the stir-fry sauce and toss for 10-15 seconds until everything is evenly coated in the sauce.
7. Add the bean sprouts: Add the bean sprouts and toss for 20 seconds, until slightly softened. Then switch off the heat.
8. To Serve: Divide the noodles evenly onto plates. Serve immediately, and with Chinese chili oil on the side if desired.