Personality splitting is rare in itself, but Princess Wenxi having multiple personality disorder is an even more complex matter. That's because each personality is independent and complete, with its own thoughts and ability to act. The relationships between each personality might be connected or not, and it's difficult to discern things clearly all at once. Trying to determine whether such a person has the capability and means to commit murder is indeed a daunting task, and also difficult to prove in the Great Tang.
Ran Yan speculated that Princess Wenxi might have split off the personality, "Li Wanping," likely because in a life of constant surveillance and crises, she imagined her sister had never disappeared and was still by her side to protect her as a powerful force. Because of their combined flaws in strength, she then conjured another non-intellectual, physically strong personality to serve as a loyal servant to both sisters…
