In " New World," Liu Rusi died because Tie Lin said the following: You shouldn't be here. You should be somewhere safer. This sentence made Liu Rusi feel threatened and terrified, which led to her death. The background of this sentence was that Liu Rusi and Tielin used to have a very close relationship. However, with Tielin's appearance and actions, Liu Rusi gradually felt uneasy and afraid. Therefore, when Tielin said this, she felt abandoned and isolated, and finally chose to commit suicide.