Crown Prince Sado
The death of Princess Hwapyeong, Hwawan's elder sister and was the most favorite child of the king, in 1748, causes Yeongjo moved the affection of his late daughter to Princess Hwawan; since her widowhood in 1757, Yeongjo asked her daughter to live near the palace. Getting much favor from her father, Princess Hwawan gradually gained power in the court; on the other hand, Crown Prince Sado, her brother, had a tense relationship with their father, much to his jealousy. When Crown Prince Sado was still alive, as Princess Hwawan was terrified by his acts from his madness, she never rejected any of his requests and helped many of his problems. For example, in 1760, as Crown Prince Sado couldn't endure to be in the same palace with Jeongjo, by threatening Princess Hwawan, he urged the king move to Gyeonghui Palace; meanwhile, the crown prince was exceptionally allowed to have a convalescence trip to the Onyang hot spring in Asan, and it was successfully requested by the princess as well.