source:
http://korea.people.com.cn/205155/205551/8254060.html
https://en.wikipedia.org/wiki/Kimchi
http://zenkimchi.com/top-posts/kimchi-1-short-history/
https://en.wikipedia.org/wiki/Kimchi-jjigae
https://www.youtube.com/watch?v=jEXbYfY3Zm0
https://www.youtube.com/watch?v=gSIO88WTLTw
https://www.youtube.com/watch?v=6nPUBsVQAkU&list=PLFYr6QuN1iAQXnuJAb5WRUQhiS_EH-BFM&index=3
https://www.youtube.com/watch?v=0sX_wDCbeuU
https://www.youtube.com/watch?v=BvZ9m3Bikuw
https://www.youtube.com/watch?v=rJgb92JWMCE
https://www.youtube.com/watch?v=6f5ZWlHalFc
https://www.youtube.com/watch?v=exNLkdYvzg4
https://www.youtube.com/watch?v=OJBj-OuOcKg