In 1762, King Yeongjo of Joseon was in a difficult spot regarding what to do with his son, Crown Prince Sado. The prince, who suffered from an unknown mental illness, had been on a murder spree. As such, something had to be done. However, social taboos and traditions proved tricky to punish the prince. What Yeongjo devised was a unique form of execution fit for a prince. Learn about the Prince in the Rice Box on History Under the Radar.