Boil the noodles in boiling water, rinse them in cold water, and drain well.
Finely chop the kimchi.
In a bowl, mix chili powder, soy sauce, sugar, vinegar, and sesame oil to make the sauce.
Add the chopped kimchi and sauce to the noodles, and mix evenly.
Top with boiled egg, julienned cucumber, and seaweed flakes to finish.