Although the harem women used many methods and many people were ruthless, Qi Guiren really wanted to bring down Zhen Xuan, so he did a lot of bad things. But Zhen Xuan is also very clever and has never fallen into his trap.
However, being outnumbered, Qi Guiren finally failed to escape the joint efforts of the Empress and used the emperor's feelings for the Empress Chunyuan to harm her. He also sent his family to prison and lost all his status and honor overnight.
However, after Zhen Xuan's return to the palace, she changed from an abandoned princess to a princess, and she was very popular with the emperor. At this time, he is not what he used to be. In the face of the Queen and Qi Guiren trying to murder him with Wen Chu Shi, he sacrificed Qi Guiren and the whole family and put himself in a corner.
But when Qi Guiren knelt in the rain and begged the emperor to spare his family, the emperor asked Su Peisheng to drive her away, but Su Peisheng went against the emperor's wishes and killed her directly. This is because Qi Guiren used torture on Cui Jinxi, and the relationship between Su Peisheng and Park Hsi-hee has been very clear through TV series, so this is not a strange problem.
So, although Su Peisheng doesn't have the capital to be a man, he really likes Cui Jinxi, so it's natural to avenge Cui Jinxi.