Feng Yan died because she didn't understand people well. She mistakenly took the fake family relationship seriously and promoted her royal brother to a high position. What she got was imprisonment and harm.
After dying together, she lives again, takes revenge, and chooses worthy people to accompany her.
Obviously they need each other, but she knows what they are thinking, and she won't expose or admit it, which is frustrating and internal.
After her revenge was successful, she decided to escape and leave the struggle for imperial power, thinking she could live a free life.
But she had gone into seclusion, why did they come after her?
