The deliciousness of Korean kimchi comes from a host of ingredients used in the making such as fermented salted shrimps, fish sauce, turbinado sugar (partially refined), gochugaru, the Korean red chili pepper flakes, Korean course sea salt, seasoned watercress, garlic, onion, water and other ingredients mixed into the vegetable.
Find all the hypes that kimchi deserves: https://en.m.wikipedia.org/wiki/Kimchi