Today I went to National museum I saw our korea's culture.Now, I'm going to introduce three cultural heritages in korea.During Goryeo period, korean made spirits Letter.Tripitaka koreana because they want to win the war against Mongolian soldiers borrowing the Budda's strength.It is called Palmandaejanggyeong It has 80,000 wood blocks it is amazing!This is also in Goryeo period culture it is called Inlayed celadon.Actually it was started in china, but Goryeo made it more beautiful than chinese Inlayed Celadon because it's colors are blue-green glazed and it has crane's drawings.In jeoseon period, king sejong created Hangul the name is Hunminjeongeum.It is easy to write, create new word,easy to speak,and understand in short time.I'm proud of our culture!