Chen Cheng-po composed a series of watercolor sketches of female nudes during his stay in Shanghai. This work shows the model in a very dynamic posture. She is standing with her back to the viewer and raising both arms.
Suchu Li, "Charming Bodies in Freehand Brushwork - A Preliminary Analysis of Chen Cheng-po's Watercolor Sketches of Female Nude," in The Spring of Alishan—New Perceptions on Chen Cheng-Po and Taiwanese Art History (Taipei City: Chin-Shuan Cultural & Educational Foundation, 2013), 136-185.