Nangong Nuannuan had humiliated Su Fei in Naboo and had her family stay there for a very long time. Her hatred towards Nangong Nuannuan could only be appeased by killing her.
After all, her father was the second-in-command of War Leopard, the biggest underworld force in all of Camino. She used him to deal with people she hated. She was very angry when she found out about Nangong Nuannuan's true identity, so two days ago, she was ecstatic when she found out that Nangong Nuannuan was actually coming to Luntan—to her territory!
However, for the sake of the Shipley family's honor, she could not do it herself. Thus, she asked Xu Yunyun to issue the death warrant.
Perfect!
Fortunately, Xu Yunyun was the one who issued the death warrant, not Su Fei. She could just deny any knowledge about it.
Su Fei's mind spun rapidly. After thinking it through, she immediately began to work on a survival strategy.