After becoming a small ball, you can't use a hand ring, no oxygen.http://imgsrc.baidu.com/forum/pic/item/f160bfc451da81cb5b4819375966d016082431a8.jpg http://imgsrc.baidu.com/forum/pic/item/50d9f32397dda1445852f648b9b7d0a20df48684.jpg https://imgsa.baidu.com/forum/w%3D580/sign=c25efc89f0f2b211e42e8546fa816511/376d94246b600c3355224432114c510fd8f9a184.jpg