I dont even know about Phuong Chi and I also think 99% Vietnamese dont know about her too. It's normal for any girls work in Japanese idol business do gravure but it's a big NO in Vietnam. ( I even see a lot of Japanese fans hate bikini shots, especially fangirls. For example, my kamioshi is kinda a big name in idol world recently, the most popular one in her group, but she hasnt released photobook yet because not only she and mngm but also her fandom, which is created mostly by fangirls, is against this skin-showing idea.) While bikini / gravure shots are made for male fans, A lot of Vietnamese guys have a stereotype that "Japan" + "Bikini" = "JAV" and I dont want girls heard these words. Of couse you can wear anything you want to wear in Vietnam but if you want SGO become big name, a public friendly group, let them out of bikini routine.