Wash the cucumbers and pat them dry.
Place a cucumber on a cutting board and cover it with plastic wrap.
Using the flat side of a cleaver or a rolling pin, gently smash the cucumber until it splits open.
Cut the smashed cucumber into bite-sized pieces, about 1-inch long.
Place the cucumber pieces in a colander and sprinkle with salt. Let sit for 15 minutes to draw out excess water.
In a bowl, mix together minced garlic, rice vinegar, sesame oil, sugar, white pepper, and soy sauce to make the dressing.
After 15 minutes, gently squeeze the cucumbers to remove any remaining water and transfer them to a serving bowl.
Pour the dressing over the cucumbers and toss well to coat evenly.
Let the dish marinate for 5-10 minutes before serving to allow the flavors to meld.
Serve chilled or at room temperature.