"Shangshu·Wuyi", a refined version of the Korean regular script, is in the collection of the Han Dynasty Library of Harvard University.
"Shang Shu·Wu Yi" is a warning from Duke Zhou to King Cheng of Zhou. Duke Zhou decided to hand over the heavy responsibility of governing the world to King Cheng. Just before King Cheng took office, Duke Zhou gave King Cheng another lesson. Later, their conversation was compiled into a text, which is the "Wuyi" chapter preserved in "Shangshu".
