Crown Prince Sado, also known as Crown Prince Jangheon, was the second son of the Korean king Yeongjo of Joseon. Due to the prior death of Sado's older half-brother Crown Prince Hyojang, the new prince was the probable royal heir. Prince Sado was not given an opportunity to reign. At the age of 27 he was executed by order of his father and died of starvation by being confined in a rice chest. His father gave him the posthumous title Sado, meaning "Thinking of with great sorrow."