This video can be viewed in two ways. You can sit and watch. Or look absent-mindedly, turn around to look at the lively streets around, and return to this video. You still see avatars generated by "traffic yellow lines", reminding us that the body is part of the urban road, an extension of the body. The idea came from my concern with my own shadow on the "yellow line of traffic". Experiencing the impact of the "Yellow Line of Traffic" on my life, allowing the hallucinations to play out on the roads of the city and making me part of the environment. I use my mobile phone to record and make this process, experience the texture of "traffic yellow line" and challenge the abstraction of the body. I hope this video can be my "self-portrait" or everyone's "self-portrait", just to verify the free space that exists between human and artificial.