Soak the egg noodles in cold water for a minimum of 10 minutes. Drain and rinse with running water to remove excess salt and starch.
In a pot over medium heat, pour 2 tablespoons of cooking oil and cook the shrimp until it changes color to pink. Take them out and set aside.
In the same pot, add 2 tablespoons of oil and saute garlic and onion until translucent.
Add the liver and cook until the liver changes color. Take them out and set them aside on a plate.
In the same pot, pour the chicken broth, fish sauce and black pepper. Bring it to a boil.
Add the lomi egg noodles, celery, and carrots. Cook for a few minutes until the carrots and celery are tender-crisp.
Add back the sauteed liver and let it cook for 2 minutes.
Add the napa cabbage and cook for 1 minute.
Pour in the cornstarch slurry and stir continuously until the soup has thickened.
Pour the beaten eggs and stir in one direction. Stirring slowly in a large slow circular motion will yield large “ribbons” of egg and stirring faster will result in a finer “egg flower.”
Add the cooked shrimp. Taste and adjust the seasoning accordingly. Serve in a bowl. Enjoy while hot!