Yulgok Yi is said to have been a crazy monster

Yulgok Yi is said to have been a crazy monster genius who has studied for more than 500 years in the history of Joseon.
From the mid- to late-teens to the early 20s, he took the exam nine times and never missed the top in his studies.

These days, it is similar to passing all the externalities of a city rather than taking a leave of absence and serving in the military at the age of 1st or 2nd year of college.
Or, it's boring to have only one medical degree, so after a doctor, you can get a bar license, or you can get a business license for flying a plane as a hobby while you're in medical school. It's similar to this.

Yulgok said, "Thousands to tens of thousands of pages of Chinese classics are embedded in a scan image file like taking a picture on the head, and when writing his argument, the sentence must have popped out of the right place.
Of course, I write in Chinese with a brush. At that time, there were no computer keyboards or Chinese IME.

That's why that person's face is on the 5,000 won bill in Korea, and that person's mother's face is on the 100,000 won bill.
By the way..
So what did Yulgok create and contribute to the world with that good brain...? Did he establish any novel ideas and theories other than objects?

Although he came up with some advanced policies while working as a bureaucrat, it was not adopted.
Maybe he only wasted his talent on the ink of Confucius's Mencius's words?

For your information, one of the Western super-geniuses who lived about half a century before Yulgok was Leonardo da Vinci. What this person left behind... It must be nagging to put it another way.
Yulgok was famous in the 16th century and was almost at the same time as Queen Elizabeth I of England. Various religious reformers and theologians emerged around the same time in the West, and mathematicians and scientists who led the scientific revolution also emerged from there. (Tico Brahe, Kepler, Galileo...)

This seems to have made the difference in development patterns between the East and the West.
Although it is said that the past test of selecting bureaucrats fairly based on test scores in China and the Korean Peninsula was hundreds of years ahead of the West. This does not seem to have been a very significant merit either.

* As I always say, Joseon was a country that was really serious about records.
It is true that records such as the Annals of the Joseon Dynasty and the Hwaseong Uigwe in Suwon are really great artifacts.

However, what I personally feel very sorry about such a record is (1) that he did not write Hangul without writing it, and (2) that he recorded all kinds of American Algios, and there are no birth and final records of national merit such as Gongdol Jang Young-sil and cartographer Kim Jung-ho.
There is nothing more to say if it was recorded at first but was lost later, but it would be very regrettable if the record was neglected because it was not ink for foreign students.

* Among the Joseon kings, Yi Bang-won is the only king with a history of passing the civil service examination during the Goryeo Dynasty. In other words, this man was also a very smart man.
Although he also had a dark history of killing Jeong Mong-ju arbitrarily and turning a blind eye to his father, the best thing he did was to make Sejong the successor instead of the oldest son and lay the foundation for his son to rule the country stably. (All the competitors are removed. Only this Abbie is buried with blood.)

* It's also good to hold Jongmyo Shrine and tear down the central office building that was covering Gyeongbokgung Palace..
To this day, there are no Korean characters on the bill.. I think it's too much Eva.
Except for politicians and soldiers, it would be better to include people like Gong Byeong-woo, Woo Jang-chun, Jeon Gil-nam, and Lee Jong-wook in 50 to 100 years from now. How long will they stay in the Joseon Dynasty or the Japanese colonial era.

Or even someone like Jeong Yak-yong in the Joseon Dynasty.
Jeong Yak-yong feels like the Joseon version of Benjamin Franklin.