Fan Xian went to the palace to steal the key.

Fan Xian was not discovered when he broke into the Royal Palace to steal the key. He successfully stole the key and left the Empress Dowager's bedroom without arousing any suspicion. Thus, Fan Xian was not discovered in the process of stealing the key.

Fan Xian entered the Royal Palace to steal the key in episode 27.

Fan Xian was not discovered when he broke into the Royal Palace to steal the key. He successfully stole the key and left the Empress Dowager's bedroom without arousing any suspicion. Thus, Fan Xian was not discovered in the process of stealing the key.

Fan Xian going to the Royal Palace to eat was an opportunity for the Qing Emperor to test Fan Xian and the two princes 'attitudes. The Qing Emperor hoped that Fan Xian could accept the mission to Northern Qi and eliminate the dissatisfaction and suspicion of the officials toward Fan Xian. The Qing Emperor's feelings for Fan Xian were complicated. At first, he was testing him, but following Fan Xian's performance and response, the Qing Emperor gradually became interested and concerned about him. When Fan Xian went to the Royal Palace to meet the Crown Prince and the Second Prince, they had already realized Fan Xian's true identity. This caused their attitude toward Fan Xian to change. Fan Xian's whereabouts and the Qing Emperor's arrangements would have an important impact on the development of the plot. However, it was still unclear whether Fan Xian would be able to sit on the throne.

Fan Xian going to the Royal Palace to eat was an opportunity for the Qing Emperor to test Fan Xian and the two princes 'attitudes. The Qing Emperor hoped that Fan Xian could accept the mission to Northern Qi and eliminate the dissatisfaction and suspicion of the officials toward Fan Xian. The Qing Emperor's feelings for Fan Xian were complicated. At first, he was testing him, but following Fan Xian's performance and response, the Qing Emperor gradually became interested and concerned about him.

Fan Xian had successfully stolen the key. He and Wu Zhu discussed a plan. Fan Xian would sneak into the empress dowager's bedroom and steal the key from the secret compartment. Although he encountered some difficulties during his escape, Fan Xian finally succeeded in obtaining the key and found a blacksmith to make a new key.

In " Celebrating Years," Fan Xian had successfully stolen the key to the box Ye Qingmei had left behind. He broke into the Empress Dowager's palace at night and successfully stole the key. Then, he used the key to open Ye Qingmei's chest. Fan Xian did not return the key. Instead, he made a fake key and put it back in its original place to avoid arousing the empress dowager's suspicion. Therefore, according to the information provided, Fan Xian had indeed stolen the key.

Fan Xian had stolen the key and been shot. In " Celebrating Years," Fan Xian successfully stole the key and put it back in the Palace. Although he had been shot by Yan Xiaoyi during his escape, Fan Xian had cleverly broken the arrowhead and was not injured. Thus, Fan Xian had succeeded in both stealing and putting the key back.

Fan Xian stole the key in episode 27.

Fan Xian had stolen the key from the empress dowager. He successfully snuck into the Empress Dowager's bedroom by breaking into it at night and stole the key from the secret compartment under the Empress Dowager's bed. Fan Xian did not return the real key. Instead, he made a fake key and put it back in its original place to avoid arousing the empress dowager's suspicion.