Today I went to the Museum of Natural History. In there, I learned about Cheonsangyeolchabunnyjido.

It is an astronominal chart that helped farmers by telling them which time in the year it was.although it was made in joseon dynasty, Cheonsangyeolchabunnyjido is based on the astronomical charts of Goguryeo. It means that people related weather to farming since long time ago.

 In today's class, learned that our ancestors were much more smarter then we think.And I hope that

peoples from other countrys would learn about our proud heritage.