1. In a large bowl, combine chopped cabbage and salt. Massage the salt into the cabbage until it starts to soften. Let it sit for 1-2 hours.
2. Rinse the cabbage under cold water to remove excess salt. Drain well.
3. In a separate bowl, combine carrot, daikon radish, garlic, ginger, gochugaru, soy sauce, and green onions.
4. Add the cabbage to the mixture and mix well. Use gloves to protect your hands from the spice.
5. Pack the mixture tightly into a jar, pressing down to remove air bubbles. Leave some space at the top for expansion.
6. Let the jar sit at room temperature for 1-2 days to ferment. Check daily and press down the vegetables if needed.
7. Once fermented to your liking, store the kimchi in the refrigerator.