Classic Cantonese street food: wide flat rice noodles (ho fun) wok-tossed over high heat with tender sliced chicken, crisp bean sprouts, garlic chives, and dark savory soy sauce.
Soak the rice noodles according to the instructions until cooked through, but still a bit chewy inside. Once done soaking, rinse rice noodles with cold water and drain.
Prepare the remaining ingredients while soaking the rice noodles. Mix all the sauce ingredients together in a bowl. Transfer 2 tablespoons of the mixed sauce into the bowl with the sliced chicken. Stir to mix well. Let marinate for 5 minutes while chopping the other ingredients.
Heat 1 tablespoon oil in a large nonstick frying pan over medium-high heat until hot. Spread the chicken in the frying pan in a single layer. Cook until the bottom side turns golden brown, about 1 minute. Flip and cook the other side until browned, 30 seconds to 1 minute. Transfer the chicken to a plate immediately.
In the same frying pan, add 1 tablespoon of oil and turn to medium heat. Add the spring onions, garlic, and ginger. Stir constantly until you can smell a strong fragrance, 15 seconds.
Toss the cooked noodles again and add them into the frying pan. Add the remaining 1 tablespoon of oil onto the noodles. Use a pair of tongs to toss the noodles with oil. If the noodles start to get sticky, swirl in 2 tablespoons of water.
Add the bean sprouts and sweet peppers into the frying pan. Pour in the mixed sauce. Immediately use a pair of tongs to toss and mix everything, until the sauce is absorbed by the noodles. Add the cooked chicken and give it a final toss. Turn off heat and transfer everything to serving plates immediately.
Serve hot as a main.