Trim and discard the ends of the cucumbers.
Cut the red bell pepper into strips.
Add salt and sugar to the cucumber, mix them in thoroughly to distribute.
Prepare the sauce by combining chili sauce, light soy sauce, oyster sauce, vinegar, and sugar. Add the minced garlic and stir to combine.
Drain the water from the cucumber and bell pepper mix.
Add the chopped green onions and the sauce to the vegetables. Mix well to distribute.
