What is the relationship between Ye Chen and Zi Xuan?

The relationship between Ye Chen and Zi Xuan is that Zi Xuan protects Ye Chen as a puppet. Because Ye Chen and Zi Xuan are the characters in the emperor's novels, it is introduced in the emperor's novels that Zi Xuan is the remnant soul of Donghua female emperor. In the first half, as Ye Chen's puppet, she accompanied Ye Chen in the battle. Later, the Donghua female emperor cut off contact with the ghost. Donghua Nvdi and Zi Xuan both liked imperial famine, and finally they lived together. Zi Xuan finally became emperor and lived a happy life.