Cook the lo mein according to package instructions. Rinse with cold water after cooking, drain and set aside.
Prepare the Sauce in a small bowl. Stir to mix well. Set aside.
Heat up a skillet on high heat. Add the cooking oil. Saute the garlic, then add the shrimp and stir-fry until the surface turns white. Add the bok choy and red bell pepper, stir to combine well.
Add the Sauce into the skillet, stir to mix with the ingredients. Transfer the Lo Mein into the skillet, stir to coat well with the sauce and combine well with the ingredients. Top the lo mein with the white sesame, serve hot.