Boil the noodles according to the package instructions.
Blanch kailan in the same pot in the final 20 seconds. Drain the noodles and kailan in a colander.
Heat a wok or skillet over high heat with a tablespoon of oil. Add mushrooms and stir fry until lightly browned then add garlic and toss until it becomes aromatic.
Add another tablespoon of oil then add the noodles and kailan and give it a good toss.
Add seafood (imitation crab meat, fish balls, shrimp) and stir fry until the shrimp is nearly pink, about halfway cooked.
Add chicken broth, soy sauce, oyster sauce and hoisin sauce and bring to a boil.
In a small bowl, thoroughly mix the cornstarch and water. Stir in half of the cornstarch slurry and allow the sauce to come back to a boil. Repeat until the sauce reaches your desired consistency.