Slice the cucumber thinly and sprinkle with salt. Let it sit for 10 minutes.
Blanch the mung bean sprouts in boiling water for 1 minute, then rinse in cold water.
Squeeze out excess water from the cucumber and mung bean sprouts.
In a bowl, combine cucumber, mung bean sprouts, minced garlic, salt, vinegar, and sesame oil. Mix well.
Sprinkle with sesame seeds to finish.