Are knife elder brother and Hong Jie the same person?

You can't. Knife elder brother and Hong Jie are two independent online accounts, belonging to different users. Knife elder brother is a short video creator who mainly publishes funny videos, and her video content is mainly funny and entertaining, which has attracted the attention and love of many netizens, while Hong Jie is a short video creator who mainly publishes positive energy videos, and her video content mainly conveys positive energy and inspires people, which has also attracted the attention and love of many netizens.