The reason it's called a virgin work is that it was Tang Zhong's first design piece and also his only one.
As for the origin of this work, it's quite a joke. The incident happened while he was protecting a fashion designer named Kael. Tang Zhong saw the clothes on the models at a fashion show and thought they looked nice, so he grabbed a piece of paper and began to draw his own design. Of course, Tang Zhong was just playing around; he was bored stiff, and you might as well say he was doodling.
But after he finished drawing, Kael found Tang Zhong's doodle and declared him a genius in design, insisting on learning how Tang Zhong had managed to create such a perfect piece!
Tang Zhong, of course, didn't have a clue, but he knew how to bluff, so he bragged big time and gave a series of reasons that had Kael's eyes shining, even saying that he wanted to produce Tang Zhong's design.