The work Nine Lines derives from the overhead power lines in the alley near where she lives, and it begins with the scene of utility poles standing in the bustling streets. Through displaying a mix of old and new objects, such as the endless black power lines, along with the speakers, surveillance cameras, distribution boards clinging to the pole, the flyers posted on it, and even the multiple unidentifiable bracket and cables, yet all of which seem awkward, Yang creates a narrative that consists of shapes and tries to disclose possible poetic aesthetic and the tranquillity hidden in this seemingly chaotic scene, subtly reflecting the many nondescript things in modern life.