Cook noodles in boiling water in a large pot according to the package instructions. Drain, rinse with cold water, drain again and set aside.
While the noodles are cooking, in a small bowl, whisk together soy sauce, vinegar, and hot chili oil. Make sure to scoop up some pepper solids from the bottom of the chili oil. Mix well.
Chop up green onion and cilantro.
Once the noodles are cooked, rinsed and drained, place them in a large bowl, pour the sauce over the noodles, and throw the chopped green onion and cilantro on top. Mix until the noodles are evenly coated by the sauce. Divide the dish into four portions and slurp away!