The paper in 纸包鸡 serves a purpose (other than containing the chicken).
It gives the chicken the best of two worlds: steaming and deep-frying.
Because the meat juices have nowhere to escape, the chicken is extremely juicy, much juicier than paperless deep-fried chicken could ever be.
At the same time, there's the fragrance of browned chicken though it's not crisp.
In fact, the aroma isn't