After Zhen Xuan entered the palace, she thought Yongzheng was a husband who could love her all her life. Later, she found that King Guo Jun could give her the love she wanted.
The love affair between Zhen Xuan and Guo Ziyu County can be described in one sentence.
"The apricot blossoms were slightly rainy that year, and you said you were the king of Guo County."
Zhen Xuan was promoted in the harem, from naive and kind Zhen Xuan to black-bellied Xi Guifei, and her blackening was forced to change.
Because Zhen Xuan has a distinct personality background and believes in good values, it is doomed that her blackening is incomplete.
This is not my over-interpretation, and the concubines in the palace also proved it with small details.
After Zhen Xuan returned from Kanluoji, red became a common color in Zhen Xuan's clothing.
Clothing is also sending a message that the sign of Zhen Xuan turning black is the process of upper body turning red. The more red elements she has, the darker she is.