This is a very simple and quick vegetable side dish or filler for bentos, using vegetables available in the spring - new or spring cabbage, little carrots, and greens, with shredded crabstick or surimi. You could use shredded ham instead of the crabstick, splash out a bit and use real crabmeat, or just keep it all-vegetable. This is a namul, a Korean salad-like side dish. More about namul (and another namul recipe) here. The addition of a bit of vinegar is very unauthentic, but I think it enhances the flavors.
The most time consuming part of this recipe is shredding the vegetables. You can cheat and use pre-shredded carrots and cabbage, or use your food processor, if you're not too handy with a knife.