Thousand Characters Classic with Big Character(1)

It is an ancient poem composed of 1,000 letters, each of which is made up of four letters, in a phrase written by Zhōu xīngsì(周興嗣) of Liang(梁) Dynasty. It was the basic text in the Joseon Dynasty. In the Joseon Dynasty, senior leaders[Sadaebu] learned letters(Thousand Characters Classic) and learned Confucianism in order to take examinations and become bureaucrats.