During his time there, Chang polished his painting skills, especially through his depiction of female models. He painted many nudes, an undertaking which would have been considered immoral back in his home country at that time.

He also plunged himself into the enjoyment of France's "crazy years", a period marked by liberation and creativity in the aftermath of World War I. This artistic and cultural diversity nurtured a group of so-called "dandies."

Chang became one of them and until his death he continued to live in Paris and retain the group's attitudes toward art and life, despite suffering impoverishment and being overlooked by the art world in his later years.

Chang's most carefree and happiest years were those spent at Grande Chaumiere. And the artworks he produced during this period are at the heart of an ongoing exhibition at the Tina Keng Gallery in Taipei.