Soak the soybeans for at least 6 hours.
Boil the soaked soybeans in boiling water for 20 minutes.
Rinse the boiled soybeans in cold water, then blend them smoothly with water in a blender.
Strain the blended soybeans through a cloth to make soy milk.
Cook the thin wheat noodles in boiling water and rinse in cold water.
Place the noodles in a bowl and pour the soy milk over them.
Garnish with cucumber, cherry tomatoes, or other toppings.
Season with salt to taste.