Cut off one end of each cucumber and slice them on a diagonal to create oval-shaped pieces, adjusting thickness to your liking.
Place the cucumber slices into a bowl and sprinkle with 1/2 teaspoon salt, stirring to coat evenly.
Put the salted cucumbers in the fridge for at least 20 minutes to release excess moisture.
After chilling, drain the liquid and quickly rinse the cucumbers under cold water for about 10 seconds before returning them to the bowl.
Add sesame oil, light soy sauce, sugar, rice vinegar, chili oil, sesame seeds, and minced garlic (if using) to the cucumbers.
Mix everything thoroughly so the dressing coats all the cucumber slices.
Serve right away for the best flavor and crunch. Enjoy your fresh, tangy Asian cucumber salad!