Princess Rong'an, also known as Xu Wanqing, is a county princess who was raised in the palace after her father, Duke Zhongwu, died. She is beautiful, with bright eyes and a sweet smile, and is familiar with palace etiquette. She greets Yun Ying with respect but shows subtle signs of jealousy or shadow when seeing the emperor hold Yun Ying's hand. She has a close association with Princess Zhao Li of Qinghe.