In the scorching summer of 1762, on July 4th, a tragic event occurred in Joseon. Crown Prince Yi Seon, also known as Sado, was confined by his father, King Yeongjo, who was also the current king. Eight days later, the crown prince passed away. It is known that later, in mourning for Sado, King Yeongjo bestowed upon him a posthumous title and a Chinese character to reflect on. However, there are strong claims that King Yeongjo did not mourn for Sado
During the reign of King Yeongjo, high expectations were placed on the young Crown Prince Sado due to his intelligence and diligence. However, this led to a tragic turn of events. After experiencing stress from handling state affairs, Sado suffered from paranoia and ended up killing court ladies and eunuchs who were trying to dress him. According to the "Daecheongrok," a political document centered around the Sado Incident, the number of victims at this time exceeded 100.