Today, I went to the Changgyeong Palace. In this palace, there was story about Sado crown prince. Sado crown prince is son of King Yeongjo. And Sado crown prince lived in period of political groups. Two political group, Soron and Noron fought everyday for their groups' benefit. So they wanto to kill people who were in other group.

 Sado crown prince was closed with Soron group's people, so if Sado become the king of Joseon, Noron people would be killed or punished. Noron people thought about this problemand wanted to kill Sado. so they told the false information about Sado to King Yeongjo and Yeongjo upset about that. Yeongjo ordered officers to put Sado in rice chest. Officers and Yeongjo's Sae Son ( Jeongjo ) didn't agree, but but Yeongjo didn't give up. Sado died in the rice chest.

 I think King Yeongjo was missed. He needed to be sharp. He decide by his feeling. If he think more carefully, Sado would be king. However, Yeongjo regreted about hi s sellect. And he gave his son a name, 'Sado'.