Chen Cheng-po composed a series of watercolor sketches of female nudes during his stay in Shanghai. This painting portrays two reclining, female nude models from the same point of view. "1932.5.29" is written in the upper right corner of the work.
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.