50k wuxue can call 1 hell_bing
as wuxue increases, u can call more hell bing up to 4. (has nothing to do with your gouhunshu)
hell bing can do most things: join ymdh, ask yuan about kill (no reward even though I helped my hell_bing finish his yao
)
now I use hell_bing for the material of zombie for the last 2 guai
