Fill a large saucepan with 3 to 4 inches of water and bring it to boil. Drop the noodle cakes into the boiling water, and let it cook for about 4 to 5 minutes or until the noodles look translucent. Drain the liquid and run the noodles under cold water.
Heat a large stir fry pan with olive oil over medium-high heat. Once the pan is hot, add the onions and let it cook for a minute. Add the celery, garlic, ginger, chili and stir until the onions start to brown.
Add the Chinese broccoli and cook for 2 to 3 minutes before adding the carrots, pepper, and green onions. Once the Chinese broccoli turns into a bright green, add the noodles and stir.
Mix the soy sauce, sugar, and sesame oil in a small bowl, and pour into the noodles and vegetables. Cook for an additional 2 minutes.
Sprinkle sesame seeds on top, and serve immediately.