After the defeat of Xirong, the princess Xue Ji entered the palace and captured the emperor Xiao Ru with her charm and wildness. She was favored in the harem and even the queen Xie Tanying was left out. The concubines were dissatisfied, but Xie Tanying remained calm. She knew that a stable position was the foundation, and Xue Ji was just a temporary novelty for the emperor. Xie Tanying relied on her brother's military power and the support of the Queen Mother to work step by step and cleverly resolve Xue Ji's repeated frame-ups, and even took advantage of the situation to "have a dragon descendant" to reverse the situation. She instigated the relationship between the emperor and the concubine, used her power to get rid of Xue Ji and her gang, and finally gave birth to a legitimate son, assisted the new emperor in ascending the throne, firmly sat in the position of the queen mother, held supreme power, and finally became the winner in the palace.